Question

3 metal cubes used as measures 3cm ,4cm cm and 5 cm respectively are melted to form a single cube ,find its edge

Answer 1

Answer:

6

Step-by-step explanation:

The new volume of the cube be A^3

So the volume of this cube will be equal to the sum of the volume of the 3 cubes

a1 = 3cm a2= 4cm a3 = 5cm  

A^3 = a1^3 + a2^3 + a3^3

= 27+64+125

= 216

A = 6 cm

Answer 2

Volume will remain same, so
${3}^{3} + {4}^{3) + {5}^{6} = {x}^{3}$
27+64+125=x^3
216=x^3
x=6cm