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InterviewSolution
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A sprinkler placed at the centre of a flower garden sprays water covering a circular area. If the area watered is 1386 cm2, find its radius and diameter. |
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Answer» Area of the circle = πr2 sq.units Area of the circular portion watered = 1386 cm2 πr2 = 1386 \(\frac{22}{7}\) x r2 = 1386 r2 = 1386 x \(\frac{7}{22}\) = 63 x 7 = 9 x 7 x 7 r2 = 32 x 72 r = 3 x 7 Radius (r) = 21 cm Diameter (d) = 2r = 2 x 21 cm Diameter (d) = 42 cm |
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