how long would a boy take to walk once round a circular park whose diameter is 420 m if his speed 3 km/h.
Answers
Answered by
9
Given diameter = 420m. Then the radius will be r = 210m.
Circumference = pi * d
= 22/7 * 420
= 1320 m
= 1.32km
Time taken = 1.320/3 (Given speed = 3 km/hr)
= .44 hr
= 26.4 minutes.
Hope this helps!
Circumference = pi * d
= 22/7 * 420
= 1320 m
= 1.32km
Time taken = 1.320/3 (Given speed = 3 km/hr)
= .44 hr
= 26.4 minutes.
Hope this helps!
Answered by
1
Circumference=1.32 km
Time=1.32/3
=44*60/100
=26.4mins
Time=1.32/3
=44*60/100
=26.4mins
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