Question

I really need help someone please help me

Answer 1

Explanation:

V =πr²h Volume of cylinder

200 = πr²h Substitute V = 200

`\sf (200)/(\pi r^2) =h` Make the subject as h

`\sf SA = 2\pi r^2 + 2\pi rh` Total Surface area of cylinder

`\sf SA = 2\pi r^2 + 2\pi r*\left((200)/(\pi r^2)\right)` Plugin the value of h from step 3

r = 3.169 cm Using the graph find the value of r

`\sf h = (200)/(\pi *3.169^2) = 6.34 \ cm` Substitute the value of 'r' and find the h value