Question

10.A cylinder has a diameter of 12 meters and a height of 9 meters. What is thetotal surface area of the cylinder? Give your answer to the nearest tenth, anduse 3.14 for pi

Answer 1

Solution

For this case we have the following information:

D = 12m = 12/2 = 6m

h = 9m

And we want to find the surface are so we can use the following formula:

$SA=2\pi rh+2\pi r^2$

And replacing we got:

$SA=2\pi\cdot6\cdot9+2\pi\cdot(6)^2=339.12+226.08=565.2m^2$

Then the final answer is:

565.2 m^2