Question

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

Answer 1

Answer:

If the sides of a rectangle is increased by 20% ,then its area will be increased by 30.56%.

Answer 2

Answer:

Step-by-step explanation:

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

Original area = (xy) m2.

New length =(120/100x)m=(6/5x)m.

New breadth =(120/100y)m=(6/5y)m.

New Area =(6/5x × 6/5y)m2=(36/25xy)m2.

The difference between the original area = xy and new-area 36/25 xy is

= (36/25)xy - xy

= xy(36/25 - 1)

= xy(11/25) or (11/25)xy

Hence, Increase % =(11/25xy × 1/xy × 100)%= 44%.

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