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Three cubes of iron whose edges are 6 cm, 8 cm, and 10 cm are melted and formed into a single cube. The edge of the new cube formed is

A12 cm

B14 cm

C16 cm

D18 cm

Answer:

A. 12 cm

Read Explanation:

Volume of new cube = [(6)³ + (8)³ + (10)³]cm³ = (216 + 512 + 1000) cm³ = (1728) cm³ = 2³ x 6³ cm Edge of this cube = (2 x6) = 12 cm


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