What is the area of the shaded part of the circle?

Answer: The area of the shaded sector of the circle is A = (θ / 2) × r² where θ is in radians or (θ / 360) × πr² where θ is in degrees.

What is the area of the shaded part?

The area of the shaded region is the difference between the area of the entire polygon and the area of the unshaded part inside the polygon. The area of the shaded part can occur in two ways in polygons. The shaded region can be located at the center of a polygon or the sides of the polygon.

What is the shaded part of the circle called?

The shaded portion is called the sector of the circle. It is the region bounded by two radii and an arc.

What is the area of sector?

Area of Sector Formula

The area of a sector can be calculated using the following formulas, Area of a Sector of Circle = (θ/360º) × πr², where, θ is the sector angle subtended by the arc at the center, in degrees, and 'r' is the radius of the circle.

What is the minor sector?

A sector with a central angle less than 180° is called a minor sector. A sector with a central angle greater than 180° is called a major sector.

Area of Shaded Region - Circles, Rectangles, Triangles,

What is the area of the shaded sector of the circle quizlet?

The area of the shaded sector is 4 units2. The area of the shaded sector depends on the length of the radius. The area of the shaded sector depends on the area of the circle. The ratio of the area of the shaded sector to the area of the circle is equal to the ratio of the length of the arc to the area of the circle.

What is area formula?

Given a rectangle with length l and width w, the formula for the area is: A = lw (rectangle). That is, the area of the rectangle is the length multiplied by the width. As a special case, as l = w in the case of a square, the area of a square with side length s is given by the formula: A = s² (square).

What is sector class 9th?

The region between an arc and the two radii, joining the centre to the end points of the arc is called a sector.

What is a circle Class 9?

Circles class 9 – The collection of all points equidistant from a fixed point in a plane is called a circle.

What is sector class 9th maths?

A sector of a circle is defined as a part of a circle arc, where the end points of the arc are joined to the midpoint of the circle. It is also defined as the part of the circumference(arc) and radii of the circle at the end points of the arc.

How do you write an area?

A = L * W where A is the area, L is the length, W is the width, and * means multiply.

Why is the area of a circle πr2?

The area of a circle is π multiplied by the square of the radius. The area of a circle when the radius 'r' is given is πr². The area of a circle when the diameter 'd' is known is πd²/4. π is approx 3.14 or 22/7.

What is the area of this circle in terms of pi?

The area of a circle is pi times the radius squared (A = π r²). Learn how to use this formula to find the area of a circle when given the diameter.

What is the ratio of the sector area to the area of the entire circle?

Similar to arc length, the ratio of A to the area of the entire circle is the same as the ratio of θ to one revolution. In other words, again using radian measure, area of sectorarea of entire circle = sector angleone revolution⇒Aπr2 = θ2π .