Question

What is the surface area of a conical grain storage tank that has a height of 43 meters and a diameter of 14 meters? Round the answer to the nearest square meter. (1 point)
1,100 square meters
1,112 square meters
2,507 square meters
2,605 square meters

Answer 1

Lateral Area of a Cone = (π • r • slant height)

slant height² = height² + r²
slant height² = 43² + 7²
slant height = sq root (1,898)
slant height = 43.566

Cone Area = 3.14159265 * 7 * 43.566
= 958.066

Bottom Area = PI * r²
= 3.14159265 * 49
= 153.938

Total area = 1,112.004 square meters