Question

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

Answer 1

Answer: 3 units

Step-by-step explanation:

Using distance formula :

$\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

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

$d=\sqrt{(4+2)^2+(2-2)^2}=\sqrt{36}=6\ units$

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

Then the radius of the circle will be

$r=\dfrac{d}{2}=\dfrac{6}{2}=3\ units$

Hence, the radius of the circle = 3 units.

Answer 2

Answer:

the answer is 3

Step-by-step explanation: