Question

What is the total surface area (including the area of the floor) of a building shaped as a hemisphere with radius 106 ft ?

Round your answer to the nearest whole number.

Answer 1

105897 ft²

Explanation:

let, r be the radius, so r = 106 ft

Surface area of a hemisphere,

2πr²+πr²

= 2π×106²+π×106²

= 105897 (rounded to the nearest whole number)