Question

Given c(4,3) d(-4,-3) and cd is the diameter of the circle, find the radius of the circle

Answer 1

use the distance formula to find the diameter of the circle. From there, you can divide the diameter in half to find the radius of the circle

Explanation:

so... the distance formula is...

d =
`\sqrt{(x_(2) - x_1)^(2)+(y_2 - y_1)^(2) }`

so...you just substitute the values into the equation

d =
`√((-4-4)^2 + (-3-3)^2)`

d =
`√(64+36)`

d = 10

so...that means the diameter is 10

to find the radius you do 10/2 because radius is half of the diameter

so the radius is 5

hope that helps...that took so long to write out