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Earn +20 ptsQ: How many inches in a 21 foot circle?
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How many cubic yards in an 21 foot diameter circle 6 inches thick with sand?
Volume = pi * r2 * h = pi * (21/6)2 * (6/36) since 21 foot diameter = 21/2 foot radius = 21/6 yard radius and 6 inches = 6/36 yards so volume = 6.414 cu yards.
What is the circumference of a circle with the radius of 21 inches?
A circle with a radius of 21 inches has a circumference of 131.95 inches.
What is 1 foot 9 inches?
one foot and nine inches = 21 inches
What is the diameter of a circle 66 inches in circumference?
21 inches
How many feet is ten and a half inches?
There are 12 inches per foot. Therefore, (10-1/2)/12 = (21/2)/12 = 21/24 = 7/8 foot.
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