Volume of the cube is increased by 72.8%. Find the length of new cube if the length of the original cube was 10 cm.
1. 11
2. 12
3. 14
4. 16
Volume of the cube is increased by 72.8%. Find the length of new cube if the length of the original cube was 10 cm.
1. 11
2. 12
3. 14
4. 16
1. 11
2. 12
3. 14
4. 16
Correct Answer – Option 2 : 12
Given :
The volume of cube increased by 72.8%
The original length of the cube was 10 cm
Formula Used :
The volume of cube = a3 (where a is the side of the cube)
Calculations :
Side of the original cube = 10 cm
The volume of the original cube = 103
⇒ 1000 cm3
The volume of the cube is increased by 72.8%
Volume of new cube = 1000 + 72.8% of 1000
⇒ 1000 + 728 = 1728 cm3
Let the length of new cube ‘x’
1728 = (x)3
⇒ x = 12 cm
∴ The length of the side of the new cube is 12 cm