How long will a man take to make a round of a circular field of radius 21 cm cycling at the speed of 8 km/h
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radius of the circle= 21
distance travelled=circumference of the circle.
2πr=2×22/7×21= 132cm
=1.32m
speed =8km/hr
=2.2m/s
speed =distance/time
time= speed ×distance
= 2.2× 1.32
= 2.904secs
distance travelled=circumference of the circle.
2πr=2×22/7×21= 132cm
=1.32m
speed =8km/hr
=2.2m/s
speed =distance/time
time= speed ×distance
= 2.2× 1.32
= 2.904secs
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