Question

A4. If each edge of a cube is reduced by 25%, find the
percentage decrease in its total surface area.​

Answer 1

Answer:

25%

Step-by-step explanation:

let side be x

• so area = x^2
• now side reduce by 25%
• so new side is =x-(25/100)x
• =x-x/4
• =3x/4
• so decrease in area is (4x-3x)/4
• x/4
• percentage is(( x/4)/x)*100
• =25%