Question

Three cubes of edges 3cm 4cm 5cm are melted and cast into new cube find edge of new cube

Answer 1

Answer:

6cm.cube.

Step-by-step explanation:

[volume of new cube]= volume of first cube +volume of second cube + volume of third cube [edge of new cube]^3 = (edge of first cube)^3+(edge of second cube)+(edge of third cube [edge of new cube]^3= (3)^3+(4)^3+(5)^3

[edge of new cube]^3= 27+64+125

[edge of new cube]^3= 216

[edge of new cube]= √216=6cm.cube.

Answer 2

Answer:

Hope this helps, so here you go:-

Step-by-step explanation:

volume of new cube = volume of all the three cubes added together

LET THE EDGE OF THE NEW CUBE BE 'X'

X^3=4^3 + 5^3 + 3^3

X^3 = 64+125+27

X^3 = 216

X = 6 cm

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