Question

if each side of a cube is decreased by 25% then find the percentage decrease in its surface area

Answer 1

Answer:

-43.75

Step-by-step explanation:

Given that Each side of cube is decreased by 25%.

Percentage decrease in surface area:

= [x + y + xy/100]%

= [-25 + -25 + (-25)(-25)/100]%

= [-50 + 625/100]%

= [-50 + 6.25]%

= -43.75%.

Therefore, the decrease in surface area = -43.75%.

Hope it helps!

Answer 2

Step-by-step explanation:

[x + y + xy/100]%

= [-25 + -25 + (-25)(-25)/100]%

= [-50 + 625/100]%

= [-50 + 6.25]%

= -43.75%.