a rectangular field is 90m by 70m. a man walks around it at the rate of 4km per hour. what time will he take in making 5rounds?
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Answered by
31
perimeter = 2( l + b )
= 2( 90 + 70 ) = 320m
distance in five rounds = 320 * 5 = 1600 m = 1.6 Km.
time taken = distance/speed = 1.6/4 = 0.4 hours ANSWER.
thanks...
= 2( 90 + 70 ) = 320m
distance in five rounds = 320 * 5 = 1600 m = 1.6 Km.
time taken = distance/speed = 1.6/4 = 0.4 hours ANSWER.
thanks...
Answered by
22
answer is 24 minutes.see the pic
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