Question

if each side of a square is increased by 10%, how much is its area?​

Answer 1

Answer:

Let the original length of sides be x

Then, new length :

=(110% of x)=11x10

Original area x2

New area :

=(11x10)2=121x2100

Increase in area :

=(121x2100−x2)=21x2100

∴ Increase % :

=(21x2100×1x2×100)%=21%

Answer 2

Step-by-step explanation:

Let the original length of sides be x

Then, new length :

=(110% of x)=11x10

Original area x2

New area :

=(11x10)2=121x2100

Increase in area :

=(121x2100−x2)=21x2100

∴ Increase % :

=(21x2100×1x2×100)%=21%