the surface area of a cuboid is 468cm2.it length and breath are 12 cm and 9cm respectively. find it height
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Answer:
6 cm
Step-by-step explanation:
Let the height be h.
Total Surface Area of cuboid = 2 (lb + bh + hl)
Given, T.S.A. = 468 cm², length = 12 cm and breadth = 9 cm.
=> 468 = 2 (12×9 + 9h + 12h)
=> 468/2 = (108 + 21h)
=> 234 - 108 = 21h
=> 126 = 21h
=> h = 6 cm
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