Question

The side of a solid cube is reduced by 50% , then its volume is decreased by​

Answer 1

Answer:

87.5%

Step-by-step explanation:

let change in side be from l to l/2

initial volume = l^3 =v

final volume = (l/2)^3 = l^3/8 =v/8

change in vol. = v - v/8 = 7v/8

percentage change =( 7v/8 ÷v) ×100

= (7/8)×(100). =87.5%

Answer 2

Answer:

HOPE YOU'RE DOING WELL!!!

Step-by-step explanation:

Let side =  100cm

Volume of square = s*s*s

                              = 1000000cm^3

50% of 100cm = 50cm

Volume of new square = 50*50*50

                                      = 125000cm^3

Therefore, volume decreased by = 1000000/125000

                                                       = 8%