The answer is 36π or approximately 113.1 cm.
314.28571 cm.
Surface area = 4*pi*32 = 36pi square cm
The formula for the surface area of a sphere is 4 (pi) r2For a radius of 10 cm, the surface area is4 (3.1416) (10)2 = 4 (3.1416)(100) = about 1256.64 cm2
1520.531 square cm rounded to 3 d.p.
Surface area of sphere: 4*pi*15^2 = 900*pi square cm
The surface area of a sphere with a radius of 7cm is about 615.8cm2
The surface area of a sphere with a radius of 42cm is about 22,167cm2
314.28571 cm.
Surface area of sphere: 4*pi*7^2 = 196*pi square cm
Use the formula for volume to solve for the radius of the sphere and then plug that radius into the formula for the surface area of a sphere.
Surface area = 4*pi*142 = 784pi square cm
Surface area = 4*pi*32 = 36pi square cm
Surface Area = 4*pi*r2 = 6566.9 sq cm
The formula for the surface area of a sphere is 4 (pi) r2For a radius of 10 cm, the surface area is4 (3.1416) (10)2 = 4 (3.1416)(100) = about 1256.64 cm2
Surface area of sphere = 4*pi*122 = 1809.557368 or about 1810 square cm
Oh, dude, you just need to find the radius first, which is half of the diameter, so that's 9 cm. Then you use the formula for the surface area of a sphere, which is 4πr^2. Plug in 9 for r, square it, multiply by 4, and then multiply by π. That gives you a surface area of 1017π square cm, or about 3190 square cm. Easy peasy!
Oh, dude, you're hitting me with some math here. So, the formula for the surface area of a sphere is 4πr², where r is the radius. Since the diameter is 18 cm, the radius is half of that, which is 9 cm. Plug that into the formula, and you get a surface area of 1017π cm². But like, who's really gonna measure that in real life, am I right?