The surface area of a right cylinder is given by the formula: 2πrh + 2πr².

Here, r is the radius and h is the height of the cylinder.

Given that r = 5 units and h = 9 units, we can substitute these values into the formula:

Surface area = 2π(5)(9) + 2π(5)²
= 90π + 50π
= 140π units²

Therefore, the surface area of the cylinder is 140π units².

So, the closest answer is C. 140 units². Please note that the exact answer is 140π units², which is approximately 440 units².

Question

The surface area of a right cylinder is given by the formula: 2πrh + 2πr².

Here, r is the radius and h is the height of the cylinder.

Given that r = 5 units and h = 9 units, we can substitute these values into the formula:

Surface area = 2π(5)(9) + 2π(5)²
= 90π + 50π
= 140π units²

Therefore, the surface area of the cylinder is 140π units².

So, the closest answer is C. 140 units². Please note that the exact answer is 140π units², which is approximately 440 units².

Knowee AI · Accepted Answer

The surface area of a right cylinder is given by the formula: 2πrh + 2πr².

Here, r is the radius and h is the height of the cylinder.

Given that r = 5 units and h = 9 units, we can substitute these values into the formula:

Surface area = 2π(5)(9) + 2π(5)²
= 90π + 50π
= 140π units²

Therefore, the surface area of the cylinder is 140π units².

So, the closest answer is C. 140 units². Please note that the exact answer is 140π units², which is approximately 440 units².

A right cylinder has a radius of 5 and a height of 9. What is its surface area?A.70 units2B.90 units2C.140 units2D.45 units2SUBMITarrow_backPREVIOUS