Question

A cylinder has a radius of 2 cm and a height of 8 cm. The surface area of the cylinder is _____ cm².

Answer 1

Do you know thw formula for surface area of a cylinder?

Answer 2

yes , 2*pi*r^2+2*pi*r h

Answer 3

Good, now do you know what the variables stand for?

Answer 4

yes

Answer 5

so what does r and h stand for?

Answer 6

r=2 h=8

Answer 7

Exactly :P
Now just plug them in and solve.
Is your answer rounded or exact?

Answer 8

Exact: 40pi
Rounded: 125.6637

Answer 9

thanks