SAT Math Practice Question #8037 - SATify | SATify
#8037
equations
coordinate geometry
distance
circles
formulas
geometry
medium
75 sec
A circle in the xy-plane has a diameter with endpoints (1,3) and (7,11). An equation of this circle is (x−4)2+(y−7)2=r2, where r is a positive constant. What is the value of r?
• Up to 5 characters (6 if negative). Only numbers, decimal (.), fraction (/), negative (-). • Fractions must be in lowest terms. • Mixed numbers must be converted to improper fractions.
