Question

Write the equation in standard form for the circle with radius 2 centered at the origin.

Answer 1

x² + y² = 4

Explanation:

We need to write the standard equation of circle with , centre (0,0) and radius 2 unit . The Standard equation of the circle ⭕ is ,

=> ( x - h)² + (y -k)² = r²

=> ( x -0)² + (y-0)² = 2²

=> x² + y² = 4 .

• Hence the equation of the circle is x² + y² = 4.