A playground has the shape of a rectangle, with two semi-circles on its smaller sides as diameters, added to its outside. If the sides of the rectangle are 36 m and 24.5 m, find the area of the playground. (Take π = 22/7).
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Frequency -- the number of oscillation per second........
Time period.-- the time taken by A vibrating ( oscillating ) object to complete one vibration....
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