Question

Given Circle O with diameter CD C (-7. –4) and D (1,2) What is the length of the radius of Circle O?​

Answer 1

Explanation:

Radius = diameter ÷ 2

Diameter = distance between C and D

Find the distance using distance formula

`Diameter, CD = √((-7-1)^2 + (-4-2)^2) = √(8^2 + 6^2) = √(100) = 10 \ units\\\\Therefore , radius = (Diameter )/(2) = 5 \ units`