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The radius of a semi circular garden is 10 cm find the area of the garden? |
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Answer» Perimeter of SEMICIRCLE includes:- (1)Semicircle which is HALF of CIRCLE and (2)the DIAMETER of circle. So half of the perimeter of circle= 1/2×2π =πr and the diameter=2r So the perimeter of semicircle will be= πr+2r Now putting the vlaues Perimeter which is given=108 Therefore, 108=r(π+2) 108= r(22/7+2) 108=r(22+14/7) 108=r×36/7 Therefore, r=108×7/36 Therefore, r=21m Area of garden=πr²/2 =(22/7)×(21×21)/2 After solving we will get 693 So the answer will be 693m² By Replacing the DIGITS do it
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