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100 x pi m2
It is 314.159 or 100*pi square units.
First find the radius: 4*pi*r2 = 100*pi cm2 Divide both sides by 4*pi and then square root the answer: radius = 5 cm Volume = 4/3*pi*radius3 Volume = 523.5987756 or about 524 cm3
If you means surface area of a sphere, then use this formula: A = r^2 * pi * 4 where: A= surface area r=radius pi=~3.14159 e.g.: A = 5^2 * 3.14159 * 4 A = 25 * 3.14159 * 4 A = 100 * 3.14159 A = ~314.16 cm^2 If you actually mean volume of a sphere, then use this formula: V = r^3 * pi * (4/3) where: V= volume r=radius pi=~3.14159 e.g.: V = r^3 * pi * (4/3) V = 5^3 * 3.14159 * 4/3 V = 125 * 3.14159 * 4/3 V = ~523.6 cm^3
Surface area of the sphere: 4*3.14*radius2 = 314 square inches Divide both sides by 4*3.14 and then square root both sides to find the radius: Radius = 5 inches Circumference = 2*3.14*5 = 31.4 inches