Question

three cubes of metal with edges 5 cm 4 cm and 3 cm respectively are melted to form a single cube find the lateral surface area of new cube formed ​

Answer 1

Answer:

cubes with edge 5,3,4

volume of eah cube will be

=(5×5×5),(4×4×4), (3×3×3)

=125,64,27

total volume will be 125+64+27=216

this volume will be of new formed cube

side of cube =cube root of volume

= 6

lateral surface area of cube is 4×(side×side)

=4×(6×6) =4×36 =144

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