Question

Find the height of a cylinder with radius 13 and surface area 1470.3.

Answer 1

First you need the formula for SA of a cylinder: SA = 2(πr^2) + 2πr*h
(area of the top and bottom circles plus the side)
Then plug your values into the equation and rearrange to make h the subject:
1470.3 = 2π13^2 + 2π*13*h
26πh = 1470.3 - 338π
h = (1470.3 - 338π)/26π
   =5.00042...
so h is approximately 5 units :)

Answer 2

Answer:

The answer is 5.

Step-by-step explanation:

I did the quiz and it came up as correct.