Question

Find the surface area of the cone to the nearest square unit. Use π = 3.14.

396 cm2
283 cm2
198 cm2
452 cm2

Answer 1

S = π(6^2) + π(6)(9) = 90π

= about 283 cm^2

Using π = 3.14:

S = 90(3.14) = about 283 cm^2