Question

A circle has its centre at the origin and has a radius of 5.
What is its equation?​

Answer 1

Formula is (x-h)2+(y-k)2=r2

Answer 2

x²+y²=25

Explanation:

(x-h)²+(y-k)²=r²

(x-0)²+(y-0)²=5

x²+y²=25