Question

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The formula for surface of a cylinder is given by: A=2πrh +2πr^2
Rearrange the formula to solve for h

Answer 1

(A/2πr) -r =h

Explanation:

A=2πrh +2πr^2

Subtract 2 pi r^2 from each side

A-2πrh=2πrh-2πr^2 +2πr^2

A-2πr^2= 2πrh

Divide each side by 2πr

A/2πr-2πr^2 /2πr = 2πrh/2πr

(A/2πr) -r =h

Answer 2

option 2

Explanation:

A = 2πrh + 2πr²

A = 2πr ( h + r)

2πr ( h + r) = A

`h+r=(A)/(2\pi r)\\\\h=(A)/(2\pi r)-r`