A right cylinder has a radius of 5 and height of 9. What is it's surface area?

The surface area of the right cylinder is 140π cubic units or 439.60 cubic units.

Step-by-step explanation:

We have formula to find the surface area of a right cylinder.

Surface area = 2πr (h + r)

Given: r = 5 and h = 9,

Now plug in the value of r and h in the above formula, we get

Surface area = 2π.5 (9 + 5)

= 10π (14)

Surface area = 140π

The value of π = 3.14, when we plug in the value of π, we get

The surface area = 140 * 3.14

= 439.60 cubic units.

Therefore, the surface area of the right cylinder is 140π cubic units or 439.60 cubic units.

Answer:140pi units 2 squared