The diameter of a circle has endpoints whose coordinates are R(-2, 2) and S(4, 2). what is the length of the radius?

Question

asked Dec 27, 2017 38.2k views

2 Answers

Nouvist · Answer 1 · 2018-01-01T02:51:38+0000

Answer: 3 units

Explanation:

Using distance formula :

√((x_2-x_1)^2+(y_2-y_1)^2)

The diameter of the circle with endpoints R(-2, 2) and S(4, 2) will be

$d=√((4+2)^2+(2-2)^2)=√(36)=6\ units$

Since, the radius of a circle is half of the diameter.

Then the radius of the circle will be

$r=(d)/(2)=(6)/(2)=3\ units$

Hence, the radius of the circle = 3 units.