Question

What is x? Please explain.

Answer 1

X=2/5 , i think that the answer

Answer 2

x = 2
`√(5)`

Explanation:

The radius of the circle = 4 + 2 = 6

Thus the radius is from the centre to the top of segment x

Using Pythagoras' identity in the right triangle formed, that is

x² + 4² = 6²

x² + 16 = 36 ( subtract 16 from both sides )

x² = 20 ( take square root of both sides )

x =
`√(20)` = 2
`√(5)`