Question
If the length of the rectangular pipe is 2 times of its
breadth and 5 times of its height. Find the total surface area if its volume is 600 cm³?Solution
LCM of 2 and 5 = 10 Length = 10xcm Breadth = 5xcm Height = 2xcm Volume = 10x × 5x × 2x = 600 100x = 600 x = 60 Length = 60 cm, Breadth = 30 cm, Height = 12 cm Total surface Area = 2 (lb + bh + hl) = 2 (60×30 + 30×12 + 60×12) = 2 (1800 + 360 + 720) = 2 × 2880 = 5760 cm²
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