Mayahex5

7.5 Surface Area and Volumes of Cones
 * pictures made by me.

Find the surface area of a right cone with the measurments: l=25 and R=6

Formulas needed to solve this: L=r/l x (rl²) B=(pi)r² and S= L+B

First off you need to find the lateral area. L= 6/25 x 625(pi)= 150(pi) Next, you need to find the base. B=(pi)(6)²= 36(pi) Now, plug in the numbers in your surface area equation. S=150(pi) + 36(pi) So, the answer is: The surface area of the right cone = about 584.33