The inner circumference of a circular acupressure track is 115 m and width of the track is 5 m. Find the cost of putting up a fence along the outer circle of the track at the rate ofR 120 m.
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Answer:
₹4868
Step-by-step explanation:
2πr=115m
r=115/2π
Therefore,radius of larger circle would be 115/2r +5
It's circumference=>
2 x π x 115+10π/2π
230+10π
230+31.4
261.4 m²
Cost- 261.4 x 20 = ₹4868
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