Question

Find the total surface area of a cylinder with a height of 5 cm and radius of 2 cm. Leave your answer in terms of π.

28π cm2
24π cm2
70π cm2
45π cm2

Answer 1

its supposed to be cm^2

Answer 2

Surface area formula \[2(\pi r^2) + 2\pi r(h)\]
plug the values in
\[2(4\pi) + 4\pi(5)\]
Can you simplify that

Answer 3

uh i got 87 sumn

Answer 4

wait

Answer 5

Keep it in pi form

Answer 6

I got 45 this time

Answer 7

can you tell me how you got there

Answer 8

I put 2(4π)+4π(5) into a calculator

Answer 9

don't use a dumb calculator

use your brain --- also, keep it in pi form though

Answer 10

My brain isnt smart and idk how to do this

Answer 11

a calculators smarter than me

Answer 12

you don't know 2 times 4? you dont know 4 times 5? sheesh okay

Answer 13

\(2(4\pi) + 4(5\pi) = 8\pi + 20\pi = 28 \pi^2\)

Answer 14

*pi cm^2

Answer 15

so its A?

Answer 16

positive