Geometrymedium · Past Paper
Find the length of the arc of a circle of radius 7 cm which subtends an angle of 90 degrees at the center.
A5.5 cm
B11 cm
C22 cm
D44 cm
✓ Correct Answer: B — 11 cm
Arc length = (90/360) * 2 * (22/7) * 7 = (1/4) * 44 = 11 cm.
Share this question
More from Geometry
- If a chord AB of a circle subtends 60 degrees at the center, then the triangle OAB is:
- Find the area of a triangle with sides 5 cm, 12 cm, and 13 cm.
- Find the equation of a line passing through (1, -2) and having a slope of 3.
- Two lines ax + by + c = 0 and dx + ey + f = 0 are perpendicular if:
- The perpendicular from the center of a circle to a chord ____ the chord.