Circumcircle

If AB and CD are chords of a circle with center O and the values are given in the figure. What is the length of CD?

• 2 cm

• 5 cm

• 4 cm

• 6 cm

The circum center of the right angled triangle lies at the _________ of the triangle.

• Midpoint of the base of the triangle

• Endpoint of the hypotenuse of the triangle

• Midpoint of the hypotenuse of the triangle

• Midpoint of the altitude of the triangle

Find the exact circumference of the circle using the given circumscribed polygon.

• 11π yd

• 11 yd

• 25π cm

• 11√2π cm

In the figure , let AB be the diameter of the circle. CD and EF be the equal chords. If < COA= 40° , what is <AOF?

• 40°

• 20°

• 50°

• 80°

In the figure, If O is the centre of a circle and OE is the perpendicular drawn to the chord AB and if AB= 6 cm, then what is the value of BE?

• 3 cm

• 4 cm

• 2 cm

• 5 cm

The longest chord of a circle is called ______

• Diameter

• Long chord

• Radius

• Tangent

Line Segment PQ is a __________.

• Radius

• Diameter

• Chord

• Circumference

The distance around the circle

• area

• circumference

• perimeter

• arc

Find the value of x.

• 10

• 5

• 18

• 9