Question

A box has a square base of side 20cm and height 10cm. Calculate the percentage increase in the volume of the box after the length and width of the base are both increased by 20% and then height by 15%

Answer 1

Step-by-step explanatio

Answer 2

• 65.6%

Explanation:

Volume of the box:

• V = lwh

• 20*20*10 = 4000 cm³

New volume:

• (20*1.2)*(20*1.2)*(10*1.15) = 4000 *(1.2*1.2*1.15) = 4000*1.656

1.656 times increase is equivalent of 65.6% increase