18 CM
Chat with our AI personalities
The surface area of a sphere with a diameter of 7cm is 153.9cm2
Surface area of the sphere = 4*pi*92 = 1017.87602 or about 1018 sq cm
Using the formula for the surface area of a sphere, which is SA = 4 (pi) r2, you can find the radius, and the diameter of the sphere is twice the radius. Example: If the surface of a sphere is 380 square cm 4 (pi) r2 = SA 4 (3.1416) r2 = 380 12.5664 r2 = 380 r2 = approx. 30.24 r = 5.5 and diameter D = 11 cm
60 cm diameter sphere area = pi x 602 cm2 = 11310 cm2 = 1.131 m2
Surface area of sphere: 4*pi*7^2 = 196*pi square cm