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1 April, 17:06

The given figure shows a circle with centre at o and angel AOB=90degree. If the radius the circle is 40c. m and pie=3.14; calculate the area of the unshaded portion of the circle

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  1. 1 April, 17:34
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    A circle is 360° in total, so the unsheded part should be 270 degrees. to calculate arc area, just calculate the circle area x 270/360, so here it'll be 40 square x pi x 270/360 so the answer is 3768 cm2
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