Question

15 Points!

Answer 1

Look at the picture.
Use Pythagorean theorem:
$r^2=6^2+20^2\\\\r^2=36+400\\\\r^2=436\to r=\sqrt{4\cdot109}\to r=2\sqrt{109}ft.\\\\r\approx20.88\approx20.9ft.$

Answer: D) 20.9 ft

Answer 2

Using the Pythagorean Theorem we can solve this:

20^2 + 6^2 = X^2

400 + 36 = x^2

436 = x^2

x = SQRT(436)

x = 20.9 feet long