- 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
In fig OABC is a square of side 7 cm. If OAPC is a quadrant of a circle with center O, then find the area of the shaded region.$\left[ Use\ \pi =\frac{22}{7}\right]$
"
Given: Side of the square OABC$=7$ cm. A quadrant OAPC of a circle with center O.
To do: To find the area of the shaded region.
Solution: Here OA is the side of the given square,
$\therefore\ OA=7\ cm$
Area of the square OABC$=( side)^{2}$
$=7^{2}$
$=49\ cm^{2}$
Here OA is the radius of the quadrant OAPC,
$r=7\ cm$
Area of the quadrant OAPC$=\frac{1}{4} \times \pi r^{2}$
$=\frac{1}{4} \times \frac{22}{7} \times 7\times 7$
$=\frac{77}{2} \ cm^{2}$
Area of the shaded region$=$Area of the square OABC$-$Area of the quadrant OAPC
$=49-\frac{77}{2}$
$=49-38.5$
$=10.5\ cm^{2}$
Therefore, Area of the shaded region is $10.5\ cm^{2}$.
Advertisements