Question

A hollow iron pipe 25 cm long has an exterior diameter equal to 32 cm. If the thickness of the pipe is 1cm, find the whole surface area of the pipe [ Take pi= 22/7 ]​

Answer 1

Answer:

31200cm²

Explanation:

external radius=16 cm

internal radius=15.5 cm

height of pipe = 25 cm

whole surface area = 2πh(R+r) + 2π(R²-r²)

= 9*22*25+98.96

=31200cm²

pls make calculations by self

I am too busy now but answer is correct

Answer 2

Answer:

hey are u on 9 standard

Explanation:

I just asking