Mathematics Quiz

A line intersecting a circle in two points is called a (a)   .

If the radius of a circle is 7 cm, then the area of the quadrant of a circle is (a)   .

In ∆ABC, AB = 36cm, AC = 12 cm and BC = 6 cm. Then the angle B is :

• 60°

• 90°

• 120°

• 45°

The probability of an event that cannot happen is ................ . Such an event is called ................ .

• 0

• impossible

Two concentric circles are of radii 5 cm and 3 cm. Find the length chord of the larger circle which touches the smaller circle.

• A

• B

• C

• D

• P

From a point Q, the length of the tangent to a circle is 12 cm and the distance of Q from the centre is 13 cm. The radius of the circle is :

• 10 cm

• 15 cm

• 20 cm

• 5 cm

A metallic sphere of radius 3 cm is melted and recast into the shape of a cylinder of radius 2 cm. The height of the cylinder is :

• 9 cm

• 5 cm

• 8 cm

• 10 cm

If Sin 2 A = 2 sin A is true, then angle A is :

• 30°

• 0°

• 45°

• 90°

The following distribution gives the state-wise teacher-student ratio in Higher secondary school of India. Find the mode of this data:

• 25-30

• 30-35

• 15-20

• 20-25

• 35-40

Tick the correct answer : In ∆ABC, AB = 36cm, AC = 12 cm and BC = 6 cm. Then the angle B is

• 60°

• 90°

• 120°

• 45°