If each side of a square is decreased by 17%, then by what percentage does its area decrease?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e 31.11%.
We know that
Decrease in area = (-x) + (-y) + xy/100
here
x = -17 and y = -17
⇒ (-17) + (-17) + 289/100
⇒ -34 + 2.89 = 31.11%