Question : The perimeter of a square is 90 cm more than the length of each of its sides. What is the length of each side of the square?
Option 1: 25 cm
Option 2: 30 cm
Option 3: 60 cm
Option 4: 45 cm
Correct Answer: 30 cm
Solution :
Let the length of each side of the square be $a$.
We know that,
Perimeter of a square = 4a
According to the question,
$4a = a + 90$
⇒ $3a = 90$
⇒ $a=30$
Hence, the correct answer is 30 cm.
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