Surface area of spheres practice answers

Answer 1

1. The surface area of a sphere with a radius of 5 cm is 314.16 square cm.
2. The surface area of a sphere with a radius of 7 cm is 615.44 square cm.
3. The surface area of a sphere with a radius of 10 cm is 1256.64 square cm.
4. The surface area of a sphere with a radius of 3.5 cm is 153.86 square cm.
5. The surface area of a sphere with a radius of 12.2 cm is 1862.64 square cm.