SOLUTION: A man riding a bicycle completes one lap of a square field along its perimeter at the speed of 39.6 km/h in 1 minute 20 seconds. What is the area of the field?
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Question 887982: A man riding a bicycle completes one lap of a square field along its perimeter at the speed of 39.6 km/h in 1 minute 20 seconds. What is the area of the field? Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! A man riding a bicycle completes one lap of a square field along its perimeter at the speed of 39.6 km/h in 1 minute 20 seconds.
What is the area of the field?
:
Find the distance around the perimeter
Change 1 min 20 sec to 80 sec, there are 3600 sec in 1 hr.
Change 39.6 km to 39600 meters
dist = time * speed * 39600 = 880 meters around the square
therefore
880/4 = 220 m = 1 side of the square
Area = 220^2 = 48,400 sq/m
