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How do you calculate the amount of fabric needed for a 40 ft circle?
Wiki User
∙ 12y ago
area of a circle is calculated using the formula a=(pi)r2 where a is the area and r is the radius of the circle. so:
- if the diameter(distance from one edge of the circle to the other that passes through the mid point) of your circle is 40 feet then you would need approximately 1256 square feet give or take a couple square inches.
- if the circumference (length around the edge of the circle) of your circle is 40 feet then the over all area is 127.38 square feet.
Wiki User
∙ 12y ago
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