Question

p(3,5) and q(7,-1) are the end points of a diameter of a circle. what is the length of a radius of the circle

Answer 1

`d= √((7-3)^2+(-1-5)^2) = √(16+36) = √(52) =2 √(13) \\ \\ r= (d)/(2)= (2 √(13) )/(2) = √(13)`

the length of a radius of the circle is √13