An athlete runs around a circular park 10times. If the diameter of park is 280 m, find the distance covered by the athlete in kilometer.
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radius = diameter/2 = 280/2=140 m
circumference =2ㅠr= 2×22/7×140=2×22×20=880
10 times means _ 10×880m=8800m
1 km =1000m
8800m = 8800/1000 km= 8.800 km
answer = 8.800km
circumference =2ㅠr= 2×22/7×140=2×22×20=880
10 times means _ 10×880m=8800m
1 km =1000m
8800m = 8800/1000 km= 8.800 km
answer = 8.800km
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