The radius of a circle is 5 cm then the length of its longest chord is :

1. less than 5 cm.

2. equal to 5 cm.

3. equal to 10 cm.

4. less than 10 cm

The diameter of a circle with centre at point O is 30 cm. A point P lies in the same plane as the circle and OP = 20 cm, then point P lies :

1. on the circumference of the circle

2. inside the circle.

3. outside the circle.

4. nothing can be said

A sector of a circle can be equal to its segment :

1. yes

2. no

3. none of these two