Question

The height of a cylinder pipe is 35cm. Its external diameter is 2.8cm and thickness is 0.7cm. Find the weight of a metal used for making the pipe if 1cm^3 of metal weighs 4gram..

Answer h 215.6​

Answer 1

Answer:

646.8 gram of metal used for above condition hollow cylinder/.

Step-by-step explanation:

Answer 2

The weight of a metal used for making the pipe is 646.8 grams

Step-by-step explanation:

Height of cylindrical pipe = 35 cm

External diameter = 2.8cm

External radius R  =$\frac{2.8}{2}=1.4 cm$

Thickness is 0.7 cm

Internal radius r = 1.4 cm - 0.7 cm = 0.7 cm

Volume of steel = External volume - Internal volume

Volume of steel = $\pi R^2 h - \pi r^2 h$

Volume of steel = $\frac{22}{7}(1.4^2-0.7^2)(35)$

Volume of steel = $161.7 cm^3$

Weight of 1 cubic cm = 4 grams

Weight of 161.7  cubic cm = $4 \times 161.7 = 646.8 grams$

Hence the weight of a metal used for making the pipe is 646.8 grams

#Learn more:

Find the volume of metal used to construct a hollow metallic sphere of internal and external diameter 10cm & 13cm respectively( use pie = 3.14)

https://brainly.in/question/1127595