A cone has a base radius of 2 m and a height of 6 m. What is its surface area?
Practice Questions
1 question
Q1
A cone has a base radius of 2 m and a height of 6 m. What is its surface area?
16π
20π
24π
28π
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.
Questions & Step-by-step Solutions
1 item
Q
Q: A cone has a base radius of 2 m and a height of 6 m. What is its surface area?
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.
