If diameter of a circle is increased by 25%, what will be the area of the circle? I. Circumference of the circle is 88 m. II. Area of the circle is 616 sq.m.
From I, 2Pi r = 88m ⟹ r = (88 x 7)/(22 x 2) = 14 m. d = 28 m. increased d = 125% of 28 = 35 m increased r = 17.5 m increased area = Pir² = (22 × 17.5 × 17.5)/(7) = 962.5m² From II, Pi r² = 616 m² ⟹ r²= = 196 r = 14 m. d = 28 m. increased d = 125% of 28 = 35 m increased r = 17.5 m increased area = Pi r²= (22 × 17.5 × 17.5)/(7) = 962.5m²
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