Geometryeasy · Past Paper
Find the radius of the circle (x-1)^2 + (y+2)^2 = 16.
A16
B4
C8
D1
✓ Correct Answer: B — 4
r^2 = 16 implies r = 4.
Share this question
More from Geometry
- If the angle between two tangents drawn from an external point P to a circle is 120 degrees and the radius is 10 cm, find the distance of the point P from the center.
- If the perimeter of a semi-circular protractor is 36 cm, find its diameter. (pi = 22/7)
- The coordinates of vertices of a triangle are (0,0), (6,0) and (0,8). The circumcenter is:
- The equation of a line passing through (x1, y1) with slope m is:
- An angle's complement is 1/3 of its supplement. Find the angle.