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what is the formula of a half circle. It has 180o arc. See note at end of page.
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Therefore its length is given by 1 2 C 1 2 t r where r is the radius and t 628318 is the best circle constant. Explain what is the formula of semi-circle perimeter. Divide the diameter in half.
Since youre finding the area of a semi-circle youll be looking for half of the area of a circle which means you have to use the formula for finding the area of a semi-circle and then divide it by two.
The perimeter of a semicircle is the sum of the half of the circumference of the circle and diameter. Divide the diameter in half. A semicircle means half a circle. A semicircle is a half circle formed by cutting a whole circle along a diameter line as shown above.
