Question
The circumference of a circle is 55 cm and the length of
the rectangle is 8 times the radius of the circle. Find the area (in cm2) of the rectangle, if the ratio of length and the breadth of the rectangle is 14:5, respectively.Solution
Let the radius of the circle = โrโ cm Circumference of the circle = 2ฯr 55 = 2 ร (22/7) ร r r = 8.75 Radius of the circle = 8.75 cm Length of the rectangle = 8.75 ร 8 = 70 cm Breadth of the rectangle = (70/14) ร 5 = 25 cm Area of the rectangle = 25 ร 70 = 1750 cm2
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