Question

Need help if someone can show how this is done plz

Answer 1

8.5

Explanation:

use pythagorean theorem to find the other side of the tirange.

`a^(2) +b^(2) =c^(2)`

fill in what you know:
`15^(2) + 8^(2) = c^(2)`

then solve for c
`225 + 64 = c^(2)` then
`289 = c^(2)`.

then take the square root of both sides because you just want c.

`√(289) = \sqrt{c^(2) }`. then you get that c = 17. now, the radius is half of the diameter. the diameter is the segment ab, which we found to = 17, so if the radius if half the diameter, we divide 17 by 2 and we get 8.5. so, the radius of the circle is 8.5.