Question
A circular field has radius 12 m. A circular path of
uniform width 3 m is constructed all around it outside. Find the area of the path. (Take π = 22/7)Solution
Inner radius r = 12 m Outer radius R = 12 + 3 = 15 m Area of path = π(R² − r²) = (22/7)(15² − 12²) = (22/7)(225 − 144) = (22/7) × 81 = (22 × 81)/7 = 1782/7 ≈ 254.57 m².
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