Question

Find the surface area of the figure below.

Answer 1

@hartnn

Answer 2

know the formula?

surface of cylinder = surface of lower base+surface of upper base+curved surface

Answer 3

i remember this but i dont remember how to get the circumpherance (i murdered that word lol )

Answer 4

haha, you don't need circumpherance :P



Surface area of cylinder = \((\pi r^2 +\pi r^2 + 2\pi r h) = 2\pi r (r+h) =...\)

Answer 5

r = 10, h = 21
plug in!

Answer 6

ok give me a second :)

Answer 7

628.32 is the ends, give me a second ill get the curved surface

Answer 8

the curved surface is 1319.47

Answer 9

the answer is 1947.79?

Answer 10

yes!

Answer 11

yay thanks ,man :)

Answer 12

welcome ^_^

Answer 13

@hartnn i forgot to ask before i closed the question, do you know the formula to geting the volume of the cylinder?

Answer 14

yes,
\(V = base ~area \times height = \pi r^2h\)

Answer 15

cool thanks again :)