The surface area of a sphere with a 24 inch diameter is 1809.6 square inches = 12.6 sq feet
The surface area of a sphere with a diameter of 18 feet is: 1,020 square feet.
The surface area of this sphere is 2,827 square feet.
615.7521601 square units
The surface area of a sphere with a diameter of 25 inches is about 1,963.5 square inches.
Surface area of sphere: 4*pi*33^2 = 4356*pi square feet
SA = ~314.159 square inches.
The surface area of a sphere with a diameter of 2.7 inches is about 23 square inches.
The surface area of a sphere with a diameter of 14 inches is about 615.8 square inches.
-- Take 1/2 of the diameter. That's the 'radius' of the sphere. -- 'Square' the radius. (Multiply it by itself.) -- Multiply the result by 4 pi. You now have the surface area of the sphere. P.S.: There really isn't anything else to know about a sphere other than its diameter.
-- You have to ask somebody for the radius of the sphere, in meters. If they tell you the diameter instead, then the radius is 1/2 of the diameter, in meters. -- Multiply (4) times (pi) times (the radius)2 . That's the surface area of the sphere, in square meters. -- Round the answer to the nearest square meter.
Surface area of a sphere in square units = 4*pi*radius^2