## RD Sharma Class 9 Maths Surface Area and Volume of A Right Circular Cone Solutions - Free PDF Download

## FAQs on RD Sharma Solutions for Class 9 Maths Chapter 20 - Surface Area and Volume of A Right Circular Cone

1. Why is it important to refer to RD Sharma class 9 Maths Solutions for chapter 20 from Vedantu?

RD Sharma is one of the most preferred reference textbooks. Vedantu experts explain the solutions of the Rd Sharma book in a very simple manner which will help the students understand the concepts easily. It covers all the topics and provides questions for practice. The students can get the downloadable pdf of the textbook solutions. RD Sharma Class 9 Maths solutions help students to score excellent marks in examinations. The solutions of RD Sharma are explained in a step-by-step manner by Vedantu experts which clears every doubt that may arise while studying.

2. How do RD Sharma class 9 maths solutions from Vedantu help students in getting a good hold of the surface area and volume of a right circular cone?

RD Sharma class 9 maths solutions are accurate as all the formulas used in the solutions are properly explained. Vedantu gives answers to all the questions in the exercise, which helps the students get good marks and deep knowledge of the concept.

3. What is the number of surfaces a right circular cone has?

A right circular cone has two surfaces such as a curved surface area and a total surface area.

The area occupied by the curved surface of a right circular cone is referred to as the curved surface area of the cone. As a result, when we talk about the curved surface area of a right circular cone, we don't include the area of the base. The lateral surface area is another name for the curved surface area.

The region or area of the entire surface of a right circular cone, including the base area, is referred to as the total surface.

4. How To differentiate between a right circular cone and a cone?

A cone is a three-dimensional solid with a vertex or apex and a circular base. The cone in which the axis line is parallel to the base is known as a right circular cone. It has a curved surface as well as a flat surface. The vertex or apex of the cone is where the curved surfaces of the cone intersect.

5. What are the formulas to find the curved surface area, total surface area, and volume of the right circular cone?

The curved surface area(CSA) of the right circular cone, CSA= $\pi rl$ unit square

The total surface area is the sum of the areas of all the faces. Here with respect to the right circular cone,\[\pi {r^2} + \pi rl\] =\[\pi r(r + l)\] is the formula for calculating a cone's surface area. In this equation, r stands for the radius of the circular base, h for the height of the cone, l for the height of the slant, and is around 3.14. The equation \[l = {r^2} + {h^2}\] can be used to determine the slant height if it is not specified.

The volume of the right circular cone is given by the formula,\[V = \frac{1}{3}\pi {r^2}h\]

where,

r - radius of the circular base,

h - the height of the cone.