A path of uniform width, 3m, runs around the outside of a square field of side 21m find the area of path
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l =24 and b =3. area of 1 path = 72 therefore area 4 path = 72×4= 288m. area at the corner repeated 2times . its area is 3×3 = 9. so area of 4 corner paths =36. so 288-36=252.
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