9. The diameter of a circular park is 24 m. A 3 m wide path
runs around it from inside. Find the cost of paving the
path at 25 per square meter.
ANSWER SHOULD COME ₹4590
Answers
Answered by
2
Step-by-step explanation:
Since The Diameter = 24 m
The Radius Will = D/2
= 24/2
= 12
It is given that a 3m wide path run around it from ' inside' , Therefore , The Radius Of the bigger circle will be 12-3 = 9 m
Area Of Bigger Circle = πr^2
22/7×12×12
= 3168/7
= 452.57m^2
Area Of Small Circle = πr^2
22/7×9×9
= 1782/7
= 254.57m^2
So The area Of Path = Area Of Bigger Circle - Area Of Small Circle
452.57 - 254.57
= 198m^2
The Total Cost = 198 × 50
= 4950
Rs 4950
nikkidhiman21:
my teacher said to subtract area of outer circle-area of inner circle
you have written that radius of bigger circle =9 but in area of bigger circles = pie r square you have written radius 12
in small circles you have written radius 9
please solve my problem
how did you multiply 50 ?? you have to multiply 25
too many mistakes
Answered by
10
Answer:
4950 is the correct answer dear
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