Question

Find the volume of a pipe with length, 21 cm, internal diameter, 4cm, and thickness, 0.5cm

Answer 1

Answer:

Calculate the volume of the inner hollow part first and then add 1mm to the internal diameter to get the diameter of the whole pipe (you have to account for both edges)

Step-by-step explanation:

Use V = pi x radius^2 x length

Radius is 1/2 of the diameter

so 3.14 x 2^2 x 21

Then do 3.14 x 2.5^2 x 21

Subtract the first answer from the second answer