The outer edge of a circular running track is 440 m long .If it is widened by 5 m all around ,find the cost of winening it at the rate of 8 per merer square.
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Answered by
62
2×22/7× X = 440
44/7× X = 440
X = 440 ÷ 44/7.
X = 440×7/44
X= 70
X = 70+5
X=75
(area earlier)=15400m^2
now= 17678.57m^2
difference=2278.57
cost=2278.57×8=18228.56 rupees
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44/7× X = 440
X = 440 ÷ 44/7.
X = 440×7/44
X= 70
X = 70+5
X=75
(area earlier)=15400m^2
now= 17678.57m^2
difference=2278.57
cost=2278.57×8=18228.56 rupees
plzzz mark brainliest.
kingsatyam:
hope this will help you.
Answered by
6
Answer:
your right answer is 18212m
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