Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
A circular flower bed is surrounded by a path $4\ m$ wide. The diameter of the flower bed is $66\ m$. What is the area of this path? $(\pi=3.14)$
Diameter of the flower bed$=66\ m$
Radius$=\frac{66}{2}=33\ m$
Width of the path$=4\ m$
The radius of the flower bed included a path
$=33\ m+4\ m=37\ m$
Let $r_2=37\ m$
Area of the circular path$=\pi\left(r_2^2-r_1^2\right)$
$=3.14\left(37^2-33^2\right)$
$=3.14\times(37+33)(37-33)$ [$a^2-b^2=(a+b)(a-b)$]
$=3.14\times70\times4=879.20\ m^2$
Hence, the required area$=879.20\ m^2$
Updated on: 10-Oct-2022
27 Views
Advertisements