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Area = Circumference squared divided by 4pi.

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Q: How do you find the area of a circle if only given the circumfe rence?

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For a circle or radius r, the area is given by: area = {pi}r2 (ie pi times the radius squared)

A semicircle is 1/2 of a circle. Find the area with the diameter you are given as if you had a whole circle, then divide that answer by 2 to get the area of the semicircle.

Circumference of a circle given radius Area of a circle given radius Volume of a sphere given radius Surface area of a sphere given radius Converting degrees to radians or vice versa

Unless the area is a regular polygon (or a circle) you cannot.

That depends on its radius which has not been given but the area of a circle is pi*radius squared

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By using the other information supplied about the circle to calculate either its radius (from which its area can be calculated) or its area (if the circle is similar to another with a given area and some ratio between the two circle is given):If the diameter is given: radius = diameter ÷ 2If the circumference is given: radius = circumference ÷ 2πIf the circle is similar to another circle which has a given area, and the length ratio is given; square the length ratio to get the area ratio and apply to the given area.

For a given perimeter, the circle has the largest area possible.

78.53

The circumference of a circle is given by Circumference = pi x diameter. The area of a circle is given by Area = pi/4 x diameter2. Thus for a circle with circumference c = 12 in. The area will equal a = 11.459 in2.

If the area of a circle is given as 67cm squared, the diameter is 9.236 cm and the circumference is 29.02 cm

If yo have the area of the circle, the square is irrelevant. Radius = sqrt(Area/pi)

If 'R' is the radius of the circle, then-- area of the circle is [ pi R2]-- perimeter of the circle is [ 2 pi R ]

For a circle or radius r, the area is given by: area = {pi}r2 (ie pi times the radius squared)

A semicircle is 1/2 of a circle. Find the area with the diameter you are given as if you had a whole circle, then divide that answer by 2 to get the area of the semicircle.

if given the central angle and the area of the circle, then by proportion: Given angle / sector area = 360 / Entire area, then solve for the sector area

Circumference of a circle given radius Area of a circle given radius Volume of a sphere given radius Surface area of a sphere given radius Converting degrees to radians or vice versa

Unless the area is a regular polygon (or a circle) you cannot.