Question

A horse takes 5/2s to complete a round around a circular field.If the speed of horse was 66m/s, then the radius of field is?

Answer 1

Here is the answer you need..

Distance covered in 1 revolution

=Circumference of circular field

2Πr Distance=speed×time

=66m/s×52s=165m

∴2Πr=165

2×227×r=165

r=165×72×22=26.25m.

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Answer 2

Answer:

. Perimeter of the Circular field=

2πr=speed x time

r=speed xtime/2π

= ( 66x5/2)/2π = 66x5/4π = 66x5/4x3.14=26.27m.