Question

if each side of a square is increased by 50% then how much percent will its area be increased? -this is the question.
please help me to do this sum.... please please please please please! ​

Answer 1

Answer:

Q:

The percentage increase in the area of a rectangle, if each of its sides is increased by 20%

A) 22%

B) 33%

C) 44%

D) 55%

Answer: C) 44%

Explanation:

Let original length = x metres and original breadth = y metres.

Original area = xy sq.m

Increased length = 120100 and Increased breadth = 120100

New area = 120100x*120100y=3625xy m2

The difference between the Original area and New area is:

3625xy−xy

1125xy Increase % =(1125xyxy/)*100= 44%

Answer 2

Answer:

let area be = a x a =a^2

new area = (a+a/2) (a+a/2)

= a^2 + a^2/4 + a^2= a^2 + 5/4 a^2

so area has increased by 5/4 a^2

5/4= 5×25/4×25= 75/100

so area has increased by 75%