Directions· Multiple Choice Questions
In the following problems, you are given four answers. Choose the right answer.
There is only ONE correct answer to each question.
In a figure, the perimeter of a square is 20 cm. What is the radius of the circumscribed circle?
- 2/5
- √2/5
- 5√2/2
- 5√2
Show answer
Correct answer: C. 5√2/2
Why
Side = 20/4 = 5 cm; the circle circumscribing the square passes through its corners, so its diameter equals the square's diagonal, 5√2, giving radius 5√2/2.