Question

what is the % change in the area of a square (which will become rectangle) if it's length side is increased by 10% and it's width side is decreased by 10%. In these type of problem, assume a percent (100) base and then move forward
(a) 5%
(b) 3%
(C) 2%
(D) 1%​

Answer 1

Answer:

Answer is option (d) 1%

Step-by-step explanation:

A = SIDE * SIDE

A= 10 * 10 =100

A = 11 * 9 =99

CHANGE IN PERCENTAGE OF AREA = ( 99–100 ) /100

CHANGE IN PERCENTAGE AREA =-1% ( NEGATIVE INDICATES DECREASE )

Hope it helps you!