Question

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

Answer 1

Answer:

44%......................

Answer 2

Answer:

yeah 44 percentage

Step-by-step explanation:

simplification being

consider a rectange of length10 and breadth20

so area equals 200

now increase 20percent we 12 length and 24 breath now our area equals 288

now using the formula of percentage we get;

$288 = 200 + (200 \times \frac{x}{100} ) \\ = 88 = 2x \\ = 44 = x$

that is 44 percent

the other without usimg the formula is this

now we know area increased by 88

and original area was 200 so 1percent of 200 will be 2 and 10percent will be 20 so by using this idea we can calculate that,

88 has 4 (10 percents) and 4(1 percents)

therefore 40percent and 4percent

44percent