Question

The point (6,7) lies on a circle. What is the length of the radius of this circle if the centre of the circle is located at (2,3)?

(Grade 9 Math)

Answer 1

√((6 - 2)² + (7 - 3)²) = √(4² + 4²) = √(16 + 16)

= √32 = 4√2