Answer: 6
Explanation:
Firstly, it should be noted that the diameter of a circle is twice its radius. In this case, the diameter of the circle will be:
Diameter = Radius × 2
Diameter = 16 × 2 = 32 inches
Therefore, to solve for x goes thus:
6x - 4 = 32
6x = 32 + 4
6x = 36
x = 36/6
x = 6