Question

How much rubber is required to make 20 cm pipes with outer radius 10.5 cm and inner radius 7 cm

Answer 1

Step-by-step explanation:

HLW MATE HERE IS YOUR CORRECT ANSWER....

We need to find the volume of rubber needed to fabricate the pipe.

Now the general formula for the volume of pipe is

V = π * radius² * length

Now we calculate the volume for outer radius of pipe

V = π * 10.5² * 20

V(outer) = 6,923.7‬ cm³

Now we calculate the volume for inner radius of pipe

V = π * 7² * 20

V(inner) = 3,077.2 cm3

Volume of rubber pipe = 6,923.7‬ - 3,077.2

Volume of rubber pipe = 3,846.5‬ cm3

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