The perimeter of a circular lawn is 1232 m . There is 7 m wide path around the lawn. The area (in m2 ) of the path is :( Take π = )
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Correct answer: A
Explanation
The correct answer is option 1 i.e. 8778
Perimeter = 2πr
Area of the path = π(R2 - r2)
2πr = 1232
πr = 616
22/7 × r = 616
r = 196
Radius with the path = 196 + 7 = 203
Area of the path = π(2032 - 1962)
= 22/7 × 399 × 7
= 8778