Q1 · hard · AI-verified
A chord of length 16 cm is drawn in a circle of radius 10 cm. What is the perpendicular distance of the chord from the centre of the circle?
- 5 cm
- 8 cm
- 4 cm
- 6 cm
Q2 · easy · AI-verified
The radius of a circle is 7 cm. What is its circumference? (Use π = 22/7)
- 44 cm
- 22 cm
- 88 cm
- 154 cm
Q3 · medium · AI-verified
In a triangle ABC, if AB = AC and the angle at vertex A is 40°, what is the measure of each base angle?
- 50°
- 60°
- 80°
- 70°
Q4 · hard · AI-verified
In triangle ABC, ∠B = 90°, AB = 5 cm and BC = 12 cm. A circle is inscribed in the triangle. What is the radius of the inscribed circle?
- 2 cm
- 2.5 cm
- 4 cm
- 3 cm
Q5 · medium · AI-verified
If two lines intersect at a point, and one of the angles formed is 65°, what is the vertically opposite angle to it?
- 90°
- 115°
- 65°
- 130°