Question

Identify the lateral area and surface area of a right cone with radius 7 cm and slant height 15 cm.

Answer 1

lateral area is 329.7 and the surface area is 483.56

Explanation:

Lateral area =
`\pi (7)(15) = 105\pi = 329.7\\`

Surface area = lateral area + base area

Base area=
`\pi r^(2)` =
`\pi (7)^(2)` =
`49\pi`

Surface area = 105
`\pi + 49\pi = 154\pi = 483.56`