a circular field, 28 m in diameter has a path 1.75 m wide running round it on this outside . find the cost of gravelling the path at rs. 5 per square meter..??
Answers
Answered by
9
Answer: Rs. 818.125
Step by step explanation:
Radius of circular field (r1) = 14 m
Width of the path = 1.75m
So ,
Radius = 14 + 1.75 = 15.75 m(r2)
Area of circle = πr²
Now, According to question
Area of gravelling the path = Area of circle with r1 - Area of circle with r2
= π (r1)² - π (r2)²
» π [(r1)² - (r2)²]
» π [(15.75)² - (14)²]
» π (248.0625 - 196)
» π (52.0625)
» (22/7) × 52.0625
» 163.625 m²
Thus, Area of the path is 163.625 m².
Now, cost of gravelling per square meter path = Rs.5
So, Cost of gravelling the path
= 163.625 × 5
= Rs. 818.125
Thus, Cost of gravelling the path is Rs.818.125
Answered by
0
Answer:
Area of field =
=>
Area of field + path =
=>
=>
Area of path =
=
Cost per metre square = Rs. 5
Cost for metre square =
= Rs. 818.125
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