Question

the outer diameter of a drainage pipe is 1m and it is 21m long .find the coast of painting the upper surface of the pipe at the rate of rs 5 .per square meter mathematics solution

Answer 1

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Answer 2

first find the area by using the formula (pie*r^2)

to find the radius, divide the diameter, 1, by 2.

you'll get 0.5 as the ans.

then, apply the formula

the answer will be 0.79.

to find the cost, multiply it by 5

the answer will be 3.93