Question

The radius of the base of this right circular cone is 10 centimeters and the slant height of the cone is 25 centimeters. What is its surface area? Leave your answer in terms of

OA) 100 cm OC) 350 cm? OB) 250 cm OD) 6257 cm​

Answer 1

C.)
`350\pi`
`cm^(2)`

Explanation:

Since we are given the radius of the cone's base and the slant height, we can use the following equation to solve for surface area:

`A = \pi r^(2) + \pi rl`

Now we just plug in the given information and solve:

`A = \pi (10cm)^2 + (\pi) (10cm)(25cm)\\A = 100\pi cm^2 + 250\pi cm^2\\A = 350\pi cm^2`