Question

if each egde of a cube is increased by 50% then find the percentage increase in the surface area​

Answer 1

Answer:

125%

Step-by-step explanation:

intial length=l

final length after 50% increase=l+0.5l=1.5l

intial surface area(a1)=6l^2

final surface area (a2)=6(1.5l)^2=6*2.25*l^2=13.5 l^2

a1/a2=6l^2/13.5l^2

a2/a1=13.5/6

(a2-a1)/a1 *100=(2.25-1)*100%=125%