Question

If a side of a square is increased by 30% then find the percentage increase its area.
A)30%
B)69%
C)51%
D)20%

Answer 1

Answer:

69 % is the answer

Step-by-step explanation:

Let the side of a square be 'a' units.

Area of the square = a2.

Side of the square is increased by 30% ⇒ new side of the square = 1.3 a

Area of the new square = 1.3a x 1.3 a = 1.69 a2.

Increase in the area = 1.69 a2 - a2 = 0.69 a2

Percentage increase = [(0.69 a2) / a2] x 100 = 69 %.

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Answer 2

Hey..
The answer is 69%...

Hope it helps u...
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