Areas related to circles

Circles with same centre are called ................... circles.

• equal

• congruent

• same

• concentric

The line joining any two points on the circle is .............. of the circle.

• chord

• radius

• sector

• area

A chord divides the circular region in two ................. of the circle.

• sectors

• semicircles

• segments

• arcs

The region bounded by two radii and an arc is called .............. of the circle.

• segment

• sector

• circular region

• major segment

 $\frac{\theta}{360}\times\pi r^2$  is the formula for ...............

• segment of the circle

• arc of the circle

• circumference of the circle

• sector of the circle

 $\pi r+2r$  is the ................. 

• area of the circle

• perimeter of the circle

• perimeter of the semicircle

• area of the semicircle

 $\frac{1}{4}\times\frac{\theta}{360}\times\pi r^2$  is the formula of the 

• area of the half of the circle

• area of the quadrant of the circle

• area of three quadrant of the circle

• area of the circle

 $\frac{\theta}{360}\times2\pi r$  is the formula of 

• length of arc of the circle

• area of sector of the circle

• area of segment of the circle

• area of semicircle

Area of sector is also =

• $\frac{3}{4}\times r\times length\ of\ arc$

• $\frac{1}{2}\times r\times length\ of\ arc$

• $\frac{1}{4}\times r\times length\ of\ arc$

• $\frac{1}{3}\times r\times length\ of\ arc$

Area of segment of a circle =

• Area of circle - area of sector

• Area of sector - area of circle

• Area of triangle - area of sector

• Area of sector - area of triangle