Question

the difference between the outer lateral surface area and inner lateral surface area of a cylindrical metal pipe 28 cm long is 176 cm find the outer and the inner radius of the pipe is made of 352 cm of metal

Answer 1

Let the outer radius be 'R' and the inner radius be 'r'. By using the formula 2×pi×h (R-r)=176 we will get that (R-r)=1 Now by using pi×h×(R^2-r^2)=352 we will get that (R+r)=4 using (R-r)=1 R=1+r In (R+r)=1+r+r=4 r=1.5 R=2.5

Answer 2

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