Three metallic solid cubes whose edges are 3cm, 4cm & 5cm are melted and formed into a single cube. Find the surface area of cube so formed.
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puneetbeast80
Answer:Given, edges of three solid cubes are 3 cm, 4 cm and 5 cm, respectively. ∴ Volume of first cube = (3)3 = 27 cm3 Volume of second cube = (4)3 = 64 cm3 and volume of third cube = (5)3 = 125 cm3 ∴ Sum of volume of three cubes = (27 + 64 + 125) = 216 cm3 Let the edge of the resulting cube = R cm Then, volume of the resulting cube, R3 =216 ⇒ R = 6 cmStep-by-step explanation:
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