solve for h, SA=2(3.14)3.14+(2)3.14rh

Question

 need help with this problem

Answer 1

SA = 2(3.14)² + 2(3.14)rh

 

Just apply basic algebra to find h.

 

h = [SA - 2(3.14)²] / [2(3.14)r]

Answer 2

SA = 19.7192 + 6.28rh

SA - 19.7192 = 6.28rh

 

h = (SA - 19.7192)/(6.28r)

 

If you know the values of SA and r, you can use them to find the height.  Hope that helps!