Question

if a length of the rectangle is decreased by 10% and the breadth is increased by 20%.Calculate the net effect on area​

Answer 1

Answer:

1.08 times more

Explanation:

Let the original length of the rectangle be 'L'

and the original breadth of the rectangle be 'B' .

Original area = L * B = LB

New length = L - 10% of L

= L - $\frac{10}{100}$ * L

= L - 0.1 L

= 0.9 L

New breadth = B + 20% of B

= B + $\frac{20}{100}$ * B

= B + 0.2 B

= 1.2 B

New area  = 0.9 L * 1.2 B = 1.08 LB

So, the area of the new rectangle will be 1.08 times more than the original rectangle.