Question

three cubes having age is 18 cm 24 cm and 30 cm respectively are melted into a new cube find the edges of the new cube so formed​

Answer 1

The age is 42 cm.

When we add all the numbers like 24cm, 18 cmand 30 cm you will get 42 cm.

Answer 2

Answer:

The edge of the new cube so formed is 36 cm

Step-by-step explanation:

Three cubes are melted to form a new cube.

Therefore

Sum of volume of 3 cubes = Volume of new cube formed.

We know that volume of cube = l³

So the volume of first cube is

>>>>> 18 x 18 x 18

>>>>> 5832 cm³

The volume of second cube is

>>>>> 24 x 24 x 24

>>>>> 13824 cm³

The volume of third cube is

>>>>> 30 x 30 x 30

>>>>> 27000 cm³

Substitute these values in the formula and we get

5832 + 13824 + 27000 = l³

46656 = l³

l = ∛46656

l = 36 cm

Therefore the edge of the new cube so formed is 36 cm

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