Question

7.
If the length of each edge of a cube increases by 20%

then the volume of the cube increases by
1A
0/​

Answer 1

Step-by-step explanation:

Let the side of the cube is 1 meter

Then volume of that cube = 1×1×1 = 1 cubic meter

20% of 1 meter = 0.2 meter

Then side of cube = 1+.2=1.2

Hence new volume of the cube = 1.2×1.2×1.2 = 1.728

∴ 172.8%