Question

The radius of a circle which touches y-axis at (0,3) and cuts intercept of 8 units with x-axis, is.

• A. 3
• B. 2
• C. 5
• D. 8

Answer 1

Answer: (C)

5

Answer 2

Obviously from figure,

Radius is $r = \sqrt { 4 ^ { 2 } + 3 ^ { 2 } } = 5$.