Find the number whose square is equal to the difference between the square of 75.15 and 60.12.?

Q: Find the number whose square is equal to the difference between the square of 75.15 and 60.12.?

Let the number be x. Then, accordingto the question, x2 = (75.15)2 - (60.12)2 ⇒ x2 = 5647.52 - 3614.41 ⇒ x2 = 2033.11 ∴ x = 45.09

225.9
67.635
45.09
15.03

Correct Answer: 45.09

Explanation:

Let the number be x.
Then, accordingto the question,
x² = (75.15)² - (60.12)²
⇒ x² = 5647.52 - 3614.41
⇒ x² = 2033.11
∴ x = 45.09

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