It is: 4*pi*11.5squared = 529*pi square feet
a. 2 to 5.
The surface area of a sphere is (4 pi) x (radius of the sphere)-squared.We're not completely sure of what a "90' sphere" is. If you're saying that thesphere's diameter is 90-ft, then its radius is 45-ft, and its surface area is(4 pi) x (45-ft)-squared = 25,446.9 square feet, or 2,827.4 square yards. (both rounded)
The surface area is 2,124 square feet.
The surface area is 2,123.7 ft2
Surface area = 4*pi*82 = 804.248 square feet rounded to 3 dp
It is: 4*pi*11.5squared = 529*pi square feet
a. 2 to 5.
The surface area of a sphere is (4 pi) x (radius of the sphere)-squared.We're not completely sure of what a "90' sphere" is. If you're saying that thesphere's diameter is 90-ft, then its radius is 45-ft, and its surface area is(4 pi) x (45-ft)-squared = 25,446.9 square feet, or 2,827.4 square yards. (both rounded)
The surface area is 2,124 square feet.
The surface area is 2,123.7 ft2
Finding the radius of a Sphere by using the surface area is a multi-step mathematical equation. The radius (r) of a sphere with a surface area of 1742400ft is 372.365ft.
Surface area of a sphere = (4 pi) (Radius)2 Radius = 1/2 diameter = 36.5-ft Surface area = (4 pi) x (36.5)2 = 16,741.5 square feet (rounded) = 1,860.2 square yards (rounded)
Surface area of a sphere = 4πr²A= 4(3.14159) X 1A= 12.56 ft²
3 ft
Total surface area = (2*pi*radius squared)+(pi*diameter*height)
The surface area of a sphere is 4 x Pi x radius2. Pi = 3.142. If you want the answer in sq ft you have to measure the radius (half the diameter) in feet.