A tsunami warning siren can be heard up to 2.5 miles away in all directions. From how many square miles can the siren be heard?

Question

Mathematics

Ahmed Dougherty

13 August, 08:57

A tsunami warning siren can be heard up to 2.5 miles away in all directions. From how many square miles can the siren be heard?

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Answers (2)

Know the Answer?

Ty Ballard · Answer 1

25 mi^2

Step-by-step explanation:

2.5^2 = 6.25

6.25 * 4 = 25

Bradley Meadows · Answer 2

19.63 cm

Step-by-step explanation:

Because it can be heard from all directions, it takes the shape of a circle. Plus, it's 2.5 in all directions, so the lines are all equal. Therefore, 2.5 is the radius. They're asking for the area here, and the formula for area of a circle is A = PI*R^2. I'll use 3.14 to substitute for pi. Exponents first. 2.5^2 = 6.25. After that, we multiply. 3.14*6.25 = 19.625. We arrive at the answer. 19.625 square miles.