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16 m4. There is a rectangular pillar (cuboid), 10 m in height. Its base is a square of si50cm. Find the cost of painting its four surfaces at the rate 750 perm |
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Answer» surface area of cuboid:2(lb+bh+hl)2(10x0.50 + 0.50x0.50 + 0.50x10)2 x 10.2520.5 m^2 cost= 20.5 x 50 = 1025 rs |
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