# a hollow iron pipe is 21 cm long and its external diameter

## a hollow iron pipe is 21 cm long and its external diameter

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What is the size of a hollow iron pipe?A hollow iron pipe is 21 cm long and its external diameter is 8 cm. If the thickness of the pipe is 1 cm and iron weights 8g/cm cube, then find the weight of the pipe. | Volume and Surface Area Questions Answers MCQ | Quantitative AptitudeSee all results for this question

### surface area of cylinder - ask-math a hollow iron pipe is 21 cm long and its external diameter

Surface Area of **Hollow** Cylinder : a hollow iron pipe is 21 cm long and its external diameter An **iron pipe** 20 **cm long** has exterior **diameter** equal to 25 **cm**. If the thickness of the **pipe** is 1 **cm**, find the whole surface of the **pipe**. solution : D = 25 **cm** R = 12.5 **cm** r = R thickness = 12.5 1 = 11.5 **cm**an iron pipe 20 cm long has exterior diameter 25 cm if the a hollow iron pipe is 21 cm long and its external diameter**A hollow** cylindrical tube, open at both ends is made of **iron** 1 **cm** thick. If the **external diameter** is 14 **cm** and the length of tube is 70 **cm**, Find the cost of painting **its** inner surface at the rate of Rs. 4 per **cm** 2. The **diameter** of a roller 1 m **long** is 56 **cm**.a hollow iron pipe is 21 cm long &its external a hollow iron pipe is 21 cm long and its external diameterOct 01, 2015 · Aaeesha.** External** Diameter=8cm ,** External** radius=4cm. As thickness** of the pipe** is given as 1cm so internal radius=4-1 = 3 cm. Volume** of** iron= r^2h = 22/7 {4^2 - 3^2}21 = 22/7*1*21 =462 cm^3. weight** of** iron= 462*8 =3696 gram or 3.696 kg. jd3sp4o0y and 45 more users found this answer helpful. heart outlined. Thanks 26.

### a hollow cylindrical pipe 21 dm long is made of copper its a hollow iron pipe is 21 cm long and its external diameter

**A hollow** cylindrical **pipe 21** dm **long** is made of copper. **Its** outer and inner diameters are 10 **cm** and 6 **cm** respectively. Find the volume of the copper used in making the **pipe**.What is the size of a hollow iron pipe?A hollow iron pipe is 21 cm long and its external diameter is 8 cm. If the thickness of the pipe is 1 cm and iron weights 8g/cm cube, then find the weight of the pipe. | Volume and Surface Area Questions Answers MCQ | Quantitative AptitudeSee all results for this questionWhat is the internal radius of a pipe?In this type of question, we need to subtract external radius and internal radius to get the answer using the volume formula as the pipe is hollow. Oh! line become a bit complicated, sorry for that, lets solve it. External radius = 4 cm Internal radius = 3 cm [because thickness of pipe is 1 cm]See all results for this question

### What is the diameter of a right circular cylinder?

1) The curved surface area of a right circular cylinder of height 14 cm is 88 cm 2 .Find the diameter of the base of the cylinder. 2) The ratio between the CSA and TSA of a right circular cylinder is 1:2. Find he ratio between the height and radius of the cylinder. 3) An iron pipe 20 cm long has exterior diameter equal to 25 cm.See all results for this questionWhat is the diameter of a copper pipe?A hollow cylinder copper pipe is 21dm long. Its outer diameter and inner diameter are 10cm and 6cm respectively. Find the volume of copper used in manufacturing the pipe. The inner radius of a circular well is 2.1 m and its depth is 21 m. Find the cost of plastering the inner surface of a circular well at the rate of Rs. 40 per m 2See all results for this questionVolume and Surface Area - Aptitude Questions and Answers a hollow iron pipe is 21 cm long and its external diameter**A hollow iron pipe is 21 cm long and its external diameter** is 8 **cm**. If the thickness of the **pipe** is 1 **cm** and **iron** weighs 8 g/**cm** 3 , then the weight of the **pipe** is: [A].

### Tricks to solve Volume and Surface Area Problems - School

May 02, 2018 · **A hollow iron pipe is 21 cm long and its external diameter** is 8 **cm**. If the thickness of the **pipe** is 1 **cm** and **iron** weighs 8 g/cm3, then the weight of the **pipe** is: A. 3.6 kgSolved: A Hollow Iron Pipe Is 21 Cm Long And Its External a hollow iron pipe is 21 cm long and its external diameterSee the answer. A hollow iron pipe is 21 cm long and its external diameter is 8 cm. If the thickness of the pipe is 1 cm and iron weighs 8 g/cm3, then the weight of the pipe is:Solved: 1) A Pipe Has An Outer Radius Of 3.51 Cm. If The M a hollow iron pipe is 21 cm long and its external diameterSee the answer. 1) A pipe has an outer radius of 3.51 cm. If the metal is 0.22 cm thick, what is the inner diameter of the pipe? 2) A hollow iron pipe is 21 cm long and its external diameter is 8 cm.

### Miscellaneous Quantitative Test (Part IV) For GRE/GMAT/BAT a hollow iron pipe is 21 cm long and its external diameter

**A hollow iron pipe is 21 cm long and its external diameter** is 8 **cm**. If the thickness of the **pipe** is 1 **cm** and **iron** weighs 8 g/**cm**^3, then the weight of the **pipe** is: 66 cubic centimetres of silver is drawn into a wire 1 mm in **diameter**. The length of the wire in metres will be: A hall is 15 m **long** and 12 m broad.How many cubes of 10 cm edge can be put in a cubical box a hollow iron pipe is 21 cm long and its external diameter**A hollow iron pipe is 21 cm long and its external diameter** is 8 **cm**. If the thickness of the **pipe** is 1 **cm** and **iron** weights 8g/**cm** cube, then find the weight of the **pipe**. 3.696 kgSome results are removed in response to a notice of local law requirement. For more information, please see here.Determine the metal required to make a 21 m long pipe if a hollow iron pipe is 21 cm long and its external diameter**A hollow iron pipe is 21 cm long and its external** a **iron pipe is 21** m **long** A man is standing on the 8m **long** shadow of a 6 m **long** pole A metal **pipe** with an outer **diameter** of 28mm and inner **diameter** of the area of square field is 5184 The area of a square field is 8281 m2( meter square) Find the length of the area of a square field is 60025 m square The area of a square field is 5184m2.5/5(378.3K)

### Area of Hollow Cylinder - Curved and Total Surface Area of a hollow iron pipe is 21 cm long and its external diameter

A hollow cylinder copper pipe is 21cm long. It's the outer diameter and the inner diameter is 10cm and 6cm respectively. Find the volume of copper used in manufacturing the pipe. (Answer=340 cubic. cm)An iron pipe is 21 m long and it's exterior diameter is 8 a hollow iron pipe is 21 cm long and its external diameterlenght=21m=**21***100=2100cm which is height (* means multiplied) exterior **diameter**=8cm radius=d/2 =8/2 =4cm let us take exteror radius as R thickness=1cm iterior radius=exteriror(outer) radius-thickness =4-1 =3cm(let inner radius be r volume of **pipe** (which is **hollow**)=(R squrae-r squrae)*heightA iron pipe is 21 m long and its exterior diameter is 8cm a hollow iron pipe is 21 cm long and its external diameterSorry There"s A Mistake. Let The **External** Radius Be "R" And Internal Radius Be "r". Volume Of **Hollow Pipe** = Pie* (R 2 -r 2 )*h. Internal Radius = **External** Radius- Thickness. R = 8/2 = 4. r =4-1 = 3. R 2 -r 2 = 4 2 -3 2 = 7. h = 21m = 2100 **cm**. =>22/7*7*2100 = 46200 cm3.2.4/5(17)

### A hollow iron pipe of 21 cm long and its external diameter a hollow iron pipe is 21 cm long and its external diameter

A hollow iron pipe of 21 cm long and its external diameter is** 8 cm.** If the thickness of the pipes is 1 cm and iron weights 8g/cm^2, then the weight of the pipe is equal toA hollow iron pipe of 21 cm long and its external diameter a hollow iron pipe is 21 cm long and its external diameterA hollow iron pipe of 21 cm long and its external diameter is** 8 cm.** If the thickness of the pipe is 1 cm and iron weighs 8 g/cm 3 , then the weight of the pipe is (a) 3.6 kgA hollow iron pipe is 21 cm long and its externalA hollow iron pipe is 21 cm long and its external diameter is** 8 cm.** If the thickness of the pipe is 1 cm and iron weights 8 g/cm 3, then the weight of the pipe is: A. 3.6 kg B. 3.696 kg

### A hollow iron pipe is 21 cm long and its external diameter

a hollow iron pipe is 21 cm long and its external diameter i a hollow iron pipe is 21 cm long and its external diameter A hollow iron pipe is 21 cm long and its external diameter is 8 cm. If the thickness of the pipe is 1 cm and iron weighs 8 g/cm3, then the weight of the pipe is: A.36 kg B.3.696 kg C.36.9 kg D.3.6 kgA hollow iron pipe is 21 cm long and its external diameter a hollow iron pipe is 21 cm long and its external diameterA hollow iron pipe is 21 cm long and its external diameter is** 8 cm** . If the thickness of the pipe is 1 cm and iron weighs 8 g/cm^3 , then the weight of pipe is : 10th. Maths. Surface Areas and Volumes. Conversion of Solid from One Shape to Another.A hollow iron pipe is 21 cm long and its external diameter a hollow iron pipe is 21 cm long and its external diameterA hollow iron pipe is 21 cm long and its external diameter is** 8 cm.** If the thickness of the pipe is 1 cm and iron weights 8g/cm cube, then find the weight of the pipe. 3.696 kg 3.686 kg

### A hollow iron pipe is 21 cm long and its exterior diameter a hollow iron pipe is 21 cm long and its external diameter

Mensuration A hollow iron pipe is 21 cm long and its exterior diameter is** 8 cm.** If the thickness of the pipe is 1 cm and iron weights 8 g / c m 3, then the weight of the pipe. is (t a k i n g = 22 7) : A) 3.696 kgA hollow iron pipe is 21 cm long &its; external diameter a hollow iron pipe is 21 cm long and its external diameterA hollow iron pipe is 21 cm long &its external diameter is** 8 cm.** if the thickness of the pipe is 1 cm and iron weighs 8g/cm cubic units,then the weight of the pipe is Answers (1)A hollow iron pipe is 2.1m long and its external diameter a hollow iron pipe is 21 cm long and its external diameterMay 08, 2017 · A hollow iron pipe is 2.1m long and its external diameter is 4.5 cm.if the thickness of pipe is 0.25cm and weight of iron is 4 gm/cm3, then the weight of pipe is? (ans 2.805kg) ?

### A hollow cylinderical tube 20 cm long is made of iron and a hollow iron pipe is 21 cm long and its external diameter

A hollow iron pipe is 21 cm long and its exterior diameter is** 8 cm.** If the thickness of the pipe is 1 cm and iron weights 8 g / c m 3, then the weight of the pipe. is (t a k i n g = 22 7) : A). 3.696 kg B). 3.6 kgA 21 cm long cylindrical iron pipe has exterior diameter 8 a hollow iron pipe is 21 cm long and its external diameterWe have, length of the **pipe**, h = **21 cm external diameter** of **hollow pipe**, D = 8 **cm** Now, **external** radius, R = D 2 = 8 2 = 4 **cm** thickness = 1 **cm** internal radius, r = 4 - 1 = 3 **cm** Now, volume of **hollow** metal **pipe** = h R 2-r 2 so, volume of **hollow pipe** = 22 7 × **21** 4 2 - 3 2 = 66 16 - 9 = 66 × 7 = 462 **cm** 3 Weight of 1 **cm** 3 of **iron** = 8 g So, weight a hollow iron pipe is 21 cm long and its external diameter