A part of the circumference of a circle is called

Perimeter of a sector is

A closed plane figure formed by three or more sides is called a

The __________ of a combined shape is the sum of all areas of all areas of simpler shapes on it.

The line segment which connects any two faces are called ______.

For the sectors with given measures, find the length of the arc, area and perimeter . (π = 3.14)
(i) central angle 45º, r = 16 cm
(ii) central angle 120º, d = 12.6 cm

A circle of radius 120 m is divided into 8 equal sectors. Find the length of the arc of each of the sectors.

A sector of radius 4.2 cm has an area 9.24 cm². Find its perimeter.

All the sides of a rhombus are equal. Is it a regular polygon?

In the above example split the given mat as into two trapeziums and verify your answer

The radius of a sector is 21cm and its central angle is 120°. Find perimeter of sector.

A circular shaped gymnasium ring of radius 35 cm is divided into 5 equal arcs shaded with different colours. Find the length of each of the arcs.

If the radius of a circle decreases by 10% then what is the decreases in area?

If the area of a square is same as area of a circle, find the ratio of their perimeters.

Find r₁ + r₂ if the sum of the areas of two circles with radii r₁ and r₂ is equal to the area of a circle of radius r.

A 3- fold invitation card is given with measures as in the Figure. Find its area.

Find the perimeter of sector whose area is 324 sq. cm and radius is 27 cm.