- Trending Categories
- Data Structure
- Networking
- RDBMS
- Operating System
- Java
- iOS
- HTML
- CSS
- Android
- Python
- C Programming
- C++
- C#
- MongoDB
- MySQL
- Javascript
- PHP

- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who

# Find the total surface area of a cone, if its slant height is $ 21 \mathrm{~m} $ and diameter of its base is $ 24 \mathrm{~m} $.

The slant height of a cone is $21\ m$ and the diameter of its base is $24\ m$.

To do:

We have to find the total surface area of the cone.

Solution:

Slant height of the cone $(l) = 21\ m$

Diameter of the base $= 24\ m$

This implies,

Radius $(r) = \frac{24}{2}$

$=12\ m$

Therefore,

The total surface area of the cone $= \pi r(l + r)$

$=\frac{22}{7} \times 12(21+12)$

$=\frac{22}{7} \times 12 \times 33$

$=\frac{8712}{7}$

$=1244.57 \mathrm{~m}^{2}$

Hence,

The total surface area of the cone is $1244.57 \mathrm{~m}^{2}$.

- Related Questions & Answers
- Program for Volume and Surface area of Frustum of Cone in C++
- Find a positive number M such that gcd(N^M,N&M) is maximum in Python
- Program to find total similarities of a string and its substrings in Python
- Find the Surface area of a 3D figure in Python
- Sum of even numbers from n to m regardless if n<m or n>m JavaScript
- Minimum height of a triangle with given base and area in C++
- Find the Number of subarrays having sum of the form k^m, m >= 0 using C++
- Java Program to Find the Surface area and Volume of Cuboid
- Count of numbers satisfying m + sum(m) + sum(sum(m)) = N in C++
- How to find Volume and Surface Area of a Sphere using C#?
- What are the key assumptions of Modigliani-Miller (M&M) Theorem?
- What is the difference between E commerce and M commerce?
- Find M-th number whose repeated sum of digits of a number is N in C++
- Calculating the area of a triangle using its three sides in JavaScript
- Count of triangles with total n points with m collinear in C++
- What is the word OFFER and its rules?

Advertisements