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Ans, 486 c 2Example1: Three cubes of metal with edges 6 cm, 8 cm and 10 cm respectiveltoform a singte cube. Find the total surface area of the new cube formed.Solution: Fdeesofthe three cubes are a 6 cm, a2 8 cm and a3 10 cm. |
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Answer» Volume of new cube = 6³+8³+10³= 216+512+1000=1728 (side)³= 1728 => side= 12 cm Total surface area of new cube=6side²=6(12)²=6*144= 864 cm² |
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