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what the formula for area of circle. In the example shown the formula in C5 copied down is. A pr2 A p r 2 The answer will be square units of the linear units such as mm2 m m 2 cm2 c m 2 m2 m 2 square inches square feet and so on.
Determining Areas And Perimeters Of Polygons Area And Perimeter Geometry Lessons Algebra Help from www.pinterest.com
Substitute for b and r for height. Area of a circle diameter. Therefore the formula for area of a circle.
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Area of A a 2 20m 20m 400m 2 Part B is a triangle. PI B5 2 which calculates the area of a circle with the radius given in column B. Area of circle can be calculated by using the formulas. To find the area using the radius or the length from the center of the circle to the edge use the formula area pr2 where r is the radius.
