Question

There cubes of metal with edges 3cm,4cm,5cm respectively are metaled to form a single cube . Find the lateral surface area of the cube formed.
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Answer 1

Edge of cube formed will be average of 3,4,5

= 4 cm

lateral surface area of cube = 4a square

= 4 * 4 sq

= 4 * 16

= 64 cm sq