The outer circumference of a race track is 528m the tra track is everywhere 14 m wide calculate cost of levelling track at rate of 50 paisa per square metre
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Cost of leveling track = Rs 3388 if Rate is 50 paise per sq m and width of track = 14 m & outer circumference = 528 m
Step-by-step explanation:
The outer circumference of a race track is 528m
Circumference = 2πR
=> 2 π * outer Radius = 528
using π = 22/7
=> 2 * (22 /7 ) * Outer Radius = 528
=> Outer Radius = 84 m
Width of track = 14 m
=> Inner Radius = 84 - 14 = 70 m
Area of Track = Outer Area - Inner Area
= π 84² - π 70²
= π ( 84 + 70)(84 - 70)
= (22/7) * 154 * 14
= 6776 m²
cost of levelling track = 6776 * (50/100) = Rs 3388
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