1.

3 cubes each of edge 1m, 6m, 8m, respectively are melted and made into one one single cube,find the surface area of the new cube.​

Answer»

Step-by-step EXPLANATION:

V1 + V2 + V3 = Vnew

1³ + 6³ + 8³ = side³

side³ = 729

so, SIDE = 9m

surface area of CUBE = 6l²

= 6 (9)²

= 6 x 81

= 486 m²

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