A farmer unloaded grain onto a tarp on the ground. The grain formed a cone-shaped pile that had a diameterof 12 ft. and a height of 8 ft. Determine the surface area of the exposed grain to the nearest square foot.
The surface area of a cone, not including the base, is: SA = π·r·√(h² + r²)
Since the diameter is 12', the radius is 6'.
SA = π(6)√(8² + 6²) = 6π√100 = 60π
