Make A the subject formula of A=2πr(h+r)

Answer 1

To make A the subject formula, we need to isolate A on one side of the equation and express it in terms of the variables given.

Starting with the given formula:

A = 2πr(h + r)

First, expand the brackets:

A = 2πrh + 2πr^2

Next, subtract 2πr^2 from both sides:

A - 2πr^2 = 2πrh

Finally, divide both sides by 2πr to isolate A:

A/2πr - r = h

Rearranging the terms:

A/2πr = h + r

Multiplying both sides by 2πr:

A = 2πr(h + r)

Therefore, the equation with A as the subject formula is:

A = 2πr(h + r)