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21 feet = 21*12 inches = 252 inches - whether in a straight line or a circle or whatever.
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∙ 12y ago
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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.
21 ft how many inches?
1 foot = 12 inches 21 × 12 = 252 inches
How many inches is the circumference of a circle if its radius is 21 inches?
C = 131.95 inches.
How many feet and inches 21 in?
1 foot and 9 inches.
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.
How many feet are there in 21 inches?
There are 12 inches in one foot. Therefore, 21 inches is equal to 21/12 = 1.75 feet.
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.
21 inches equals how many feet?
21 inches divided by 12 inches per foot = 1.75 feet
How many square feet in a 21' foot diameter circle?
346
What is 1 foot 9 inches?
one foot and nine inches = 21 inches
How many square feet in a 42 inch diameter circle?
The radius of the circle is 21 inches. The area of the circle is (pi) times (radius squared) = pi times 441 = 1,385.44+ square inches. 1 square foot = 144 square inches. The area of the circle is (1385.44+ square inches) divided by 144 = 9.621 square feet (rounded to 3 decimal places).
21 in equals ft in?
12 inches = 1 foot so 21 in = 1 foot 9 inches.
21 feet equals how many inches?
There are 12 inches in a foot. 12x21=252 inches Tip: Google will multiply numbers with a * between them 12*21=
