3 years ago

Find two consecutive numbers whose square differ by 25

1 answer:

8 0

Two consecutive numbers who’s square differs by 25 are 12 and 13. Those two numbers are consecutive and the numbers 144 and 169 differ by 25. The answer is 12 and 13.

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Step-by-step explanation:

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kirill115 [55]

B. (1, –3)

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The area of a quarter circle is 38.465 square inches. What is the quarter circle's radius?

LuckyWell [14K]

The formula for a circle's area is $A=\pi r^2$ . We are given an area of 38.465 square inches for a quarter of it.

Multiply this value by 4 to compensate for the quarter circle.

$4 \times 38.465=\pi r^2$

$153.86=\pi r^2$

Divide both sides by pi (Note: I'm using the conventional value of 3.14)

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Take the positive square root of both sides

$7=r$

The radius is 7 inches. Let me know if you have any questions, thanks!

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