Question

Centre of the circle is (-3,4) ,and one end of the diameter is the orgin find the radius of the circle

Answer 1

The answer is 5 units

Since the distance from the origin to the centre represents the radius, we use Pythagoras theorem.

Let radius be r, then according to the theorem we get-together

r²=-3²+4²

r=√(9+16)

r=√25

r=5

Hope this helps