What is the surface area of a dome (half a sphere) with a radius of 61 metres?
35220 m²
35120 m2
35023 m²
23380 m²
The surface area of a dome (half a sphere) can be calculated using the formula:
Surface area = 2πr²
Where r is the radius of the dome.
Plugging in the given radius of 61 metres:
Surface area = 2π(61)² ≈ 2π(3721) ≈ 2(11608.37) ≈ 23216.74 m²
Therefore, the closest option is 23380 m².