Question

a cylinder is open at the ends the external diameter is 10 cm and thickness 1 cm if the height is 8 cm find the volume of the metal used in the cylinder

Answer 1

here is your answer..... hope it helps.....

Answer 2

The volume of metal used is 226.2857 cubic cm

Step-by-step explanation:

External diameter = 10 cm

External radius R =$\frac{10}{2} = 5 cm$

Thickness of metal = 1 cm

Internal radius r= 5 cm - 1 cm = 4 cm

Volume of metal used = External Volume - Internal Volume

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

Volume of metal used =$\frac{22}{7} \times (5^2-4^2)(8)$

Volume of metal used =$226.2857 cm^3$

Hence The volume of metal used is 226.2857 cubic cm

#Learn more:

A cylinder is open at both ends and is made of 1.5cm thick metal. It's external diameter is 12cm and height is 84cm. What is the volume of metal used in making the cylinder? Also, find the weight of the cylinder if 1cm^3 of metal weighs 7.5g.

https://brainly.in/question/7442986