You divide the diameter by 2, to get the radius. Then you use the formula for the surface area of a sphere.
Surface area of a sphere = 4*pi*radius^2
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You divide the diameter by 2, to get the radius. Then you use the formula for the surface area of a sphere.Surface area of a sphere = 4*pi*radius^2
Diameter is the width of a circular or spherical figure or object. Something 180 inches in diameter is also 180 inches in width or thickness.
A cylinder with a height of 10 inches and a diameter of 8 inches has a surface area of 351.86 square inches.
A cylinder with a diameter of eight inches and a height of five inches has a surface area of 226.2 square inches.
Circumference of a circle in inches = 2*radius*pi or diameter*pi Both radius and diameter must be in inches
2r = dIf you calculate the formula correctly, the diameter would be 24 inches.