A circular ground of radius 50 meter is sorrounded by a 5 meter wide road. You
want to cover the road with tile. Find the total cost of tiling if the rate of tiling per
square meter is 30 rupees.
Answers
Given : A circular ground of radius 50 meter is sorrounded by a 5 meter wide road.
rate of tiling per square meter is 30 rupees.
To find : the total cost of tiling the road
Solution:
Radius of Ground = 50 m
surrounded by a 5 meter wide road
Radius including road = 50 + 5 = 55 m
Area of circle = π Radius²
Area of Ground = π * 50² m²
Area of Ground including road = π * 55² m²
Area of Road = π * 55² - π * 50² m²
= π * (105)5
π =22/7
= (22/7) 105 * 5
= 22 * 15 * 5
= 1650 m²
rate of tiling per square meter is 30 rupees.
total cost of tiling = 1650 x 30 = 49500 Rs
the total cost of tiling the Road = 49500 Rs
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