Question

If each edge of a cube is increased by 50%, then the percentage increase in its surface area is
(a) 50%
(b) 75%
(c) 100%
(d) 125%​

Answer 1

Answer:

125%

Step-by-step explanation:

let a1=100%

a2=150%

area a^2

a2^2/a1^2=150^2/100^2

=>9/4

area2 increased 5parts

5/4×100=125%