## RD Sharma Class 9 Solutions Chapter 16 - Circles (Ex 16.3) Exercise 16.3 - Free PDF

## FAQs on RD Sharma Class 9 Solutions Chapter 16 - Circles (Ex 16.3) Exercise 16.3

**1. What are the important Terms in Chapter 16- Circles Class 9?**

Important terms are as follows:

**Circumference**- The distance around the Circle is known as Circumference.**Radius**- The fixed point in the middle centre of the circle is known as radius.**Interior and Exterior of a Circle**: The set of points whose distance from the centre is less than the radius is defined as a circle's interior. The set of points in the plane whose distance from the centre is greater than the radius is defined as a Circle's exterior.**Chord**- A fragment that joins two points on the circumference of the circle is defined as the chord of the circle. Among the opposite line segments that may be drawn in a circle, the chord is one whose endpoints lie on the circumference. Diameter is also contemplated to be a chord that passes through the centre of the circle.**Cyclic Quadrilateral**- all four vertices lying on a circle are called a cyclic quadrilateral.

**2. What are some important formulas that you should learn in RD Sharma Chapter 16 - circle?**

Some Important formulas are:

Circumference of a Circle = 2πr

The radius of a Circle= \[\mathrm{\frac{Diameter}{2}}\]

Diameter = 2 × radius

Track Area= π × (Outer Radius – Inner Radius)

Length of Chord = 2 × √(radius

^{2}− distance^{2})Area of sector = \[\mathrm{\frac{\Theta }{360}\times \pi r^{2}}\]

**3. What is the marks distribution in Class 9 Chapter 16 Circles?**

1 question from Multiple Choice Questions of 1 mark.

OR

1 question from Fill in the blanks and Very Short Answer of 1 mark

1 long short answer of 3 marks

**4. What are the subtopics in Chapter 16 - circle of RD Sharma Class 9?**

The theories enclosed under RD Sharma for Class 9 Maths Chapter 16 are as follows:

Circle Introduction

Position of a point concerning a circle

Circular Disc

Concentric Circles

The degree measure of an arc

Chord and segment of a circle

Congruence of circles and arcs

**5. Does RD Sharma Class - 9 follow the CBSE syllabus?**

RD Sharma textbooks of all classes strictly follow CBSE guidelines. RD Sharma is preferred by the students of all boards because of carefully framed questions and the ability to make Math simple to varied students.