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First we have to find the radius:

4*pi*radius2 = 78.5 square yards

Divide both sides by 4*pi:

radius2 = 6.246831516

Square root both sides:

radius = 2.499366223 yards

Volume of a sphere = 4/3*pi*radius3

Volume = 65.40008284 cubic yards

Q: What is the volume of a sphere with a surface area of 78.5 yards squared?

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First find the radius: 4*pi*radius2 = 25pi square yards Divide both sides by 4*pi: radius2 = 6.25 Square root both sides: radius = 2.5 Volume of the sphere = 4/3*pi*2.53 = 65.449 cubic yards to 3 d.p.

2,144.66 cubic yards.

Volume of a sphere = 4/3*pi*radius3 Volume = 3053.628059 or 3056 cubic yards to the nearest cubic yard

Volume: 4/3*pi*33 = 113.097 cubic yards to three decimal places.

The surface area of a sphere is (4 pi) x (radius of the sphere)-squared.We're not completely sure of what a "90' sphere" is. If you're saying that thesphere's diameter is 90-ft, then its radius is 45-ft, and its surface area is(4 pi) x (45-ft)-squared = 25,446.9 square feet, or 2,827.4 square yards. (both rounded)

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First find the radius: 4*pi*radius2 = 25pi square yards Divide both sides by 4*pi: radius2 = 6.25 Square root both sides: radius = 2.5 Volume of the sphere = 4/3*pi*2.53 = 65.449 cubic yards to 3 d.p.

Surface = 9*pi yd2 Therefore radius = 1.5 yards and so volume = 4.5pi yd3 or 14.137 yd3

2,144.66 cubic yards.

Volume of a sphere = 4/3*pi*radius3 Volume = 3053.628059 or 3056 cubic yards to the nearest cubic yard

The volume of a 30-yard diameter sphere is 14,100 cubic yards.

33.5 cubic yards (approx).

523.6 cubic yards.

9 yards

25 yards2 ????If so....,Area sphere = 4*pi*r2You have area, so....,25 yrd2 = 4*pi*r2r = sqrt(25/4*pi)= 1.41 yards in radius-----------------------------Volume sphere = 4/3*pi*r3Volume = 4/3*pi(1.41 yrd)3= 12 cubic yards===============

Volume: 4/3*pi*33 = 113.097 cubic yards to three decimal places.

The surface area of a sphere is (4 pi) x (radius of the sphere)-squared.We're not completely sure of what a "90' sphere" is. If you're saying that thesphere's diameter is 90-ft, then its radius is 45-ft, and its surface area is(4 pi) x (45-ft)-squared = 25,446.9 square feet, or 2,827.4 square yards. (both rounded)

Volume = 4/3*pi*73 = 1436.75504 cubic yards