If length, breadth and total surface area of a cuboid are 15 cm, 10cm – InterviewSolution

1.	If length, breadth and total surface area of a cuboid are 15 cm, 10cm and 1300 cmr, then itsa) 15 cmb) 20 cmc) 25 cmd) 30 cm
Answer» Surface area = 2(lb + bh + hl)1300 = 2(15 × 10 + 10h + 15h)1300 ÷ 2 = (150 + 25h)650 = 150 + 25h25h = 650 – 15025h = 500h = 500/25h = 20cm

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