+0

+3
67
2
+266

Apr 13, 2020

#1
+2

it's 7:11 because surface area of a cylinder is 2$$\pi$$rh+2$$\pi$$r^2, so you have to take the square roots of 49 and 121 and you get 7:11

Apr 13, 2020
#2
+266
+1

Thank you so much!

Mathisgood  Apr 13, 2020