# What is the area and perimeter of a sector?

## What is the area and perimeter of a sector?

Perimeter of a Sector The perimeter of the sector of a circle is the length of two radii along with the arc that makes the sector. In the following diagram, a sector is shown in yellow colour. The perimeter should be calculated by doubling the radius and then adding it to the length of the arc.

What is the formula of area of segment?

Area of a Segment of a Circle Formula

Formula To Calculate Area of a Segment of a Circle
Area of a Segment in Radians A = (½) × r2 (θ – Sin θ)
Area of a Segment in Degrees A = (½) × r 2 × [(π/180) θ – sin θ]

### Is circle a sector?

A portion of a circle is covered by two radii and an arc. A circle is divided into two sectors and the divided parts are known as minor sectors and major sectors. The large portion of the circle is the major sector whereas the smaller portion is the minor sector.

What is the area of the sector whose diameter is 40 mm and angle is 120?

Therefore,area of sector is 419. 04 mm².

## What is sector and segment?

A sector is the part of a circle enclosed by two radii of a circle and their intercepted arc. The segment of a circle is the region bounded by a chord and the arc subtended by the chord.

What is sector in a circle?

A circular sector, also known as circle sector or disk sector (symbol: ⌔), is the portion of a disk (a closed region bounded by a circle) enclosed by two radii and an arc, where the smaller area is known as the minor sector and the larger being the major sector.

### What are math sectors?

Sector. A sector is a region bounded by two radii of a circle and the intercepted arc of the circle. The angle formed by the two radii is called a central angle. A sector with a central angle less than 180° is called a minor sector.

How do you name a sector?

To name a sector, use one arc endpoint, the center of the circle and then the other arc endpoint.