SAT Circles Question

Focused practice00:00

Question 1 · Easy · MathNovember 2024 Batch 2 · Q14Circles · 0 solved

What is the radius of the circle in the $x y$ -plane defined by $(x + 4)^{2} + (y + 8)^{2} = 169$ ?

Enter your answer

Fractions and decimals are both accepted. If the answer does not fit, fill the box — you may truncate or round.

Wrong answers are logged automatically — sign in after three questions to keep your mistake log and get memory-curve retests.

The trap here

SAT equation of a circle: the number on the right is r², not r — (x − h)² + (y − k)² = r². The SAT builds its wrong answers from students who read that last value as the radius.