Question: A cone has a base radius of 2 m and a height of 6 m. What is its surface area?
Options:
Correct Answer: 20π
Solution:
The surface area of a cone is given by SA = πr(r + l), where l is the slant height. Here, l = √(r² + h²) = √(2² + 6²) = √40. Thus, SA = π(2)(2 + √40) = 20π.
