A horse take $$2\frac{1}{2}$$ seconds to complete a round around a circular field. If the speed of the horse was 66 m/sec, then the radius of the field is,
[Given $$\pi = \frac{22}{7}$$]
Total distance covered by horse = Circumference of the circle.
$$2.5 \times 66 = 2\pi \times $$ (radius)
$$2.5 \times 66 = 2 \times \frac{22}{7}\times $$ (radius)
radius $$=\ 26.25$$
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