If x is rational then x + n is rational
The angle the radius makes with AB is a right angle, so the Pythagorean theorem applies.
r² = 17.4² - 7² = 253.76
r = √253.76 ≈ 15.9
The length of radius r is about 15.9.
The answer is A because it earns interest
Is b I already did that question like a lot of times is so easy trust me is b