Skip to ContentGo to accessibility pageKeyboard shortcuts menu
OpenStax Logo

C | Geometric Formulas

PrealgebraC | Geometric Formulas

Name Shape Formulas
Rectangle No Alt Text Perimeter:P=2l+2wArea:A=lwPerimeter:P=2l+2wArea:A=lw
Square No Alt Text Perimeter:P=4sArea:A=s2Perimeter:P=4sArea:A=s2
Triangle No Alt Text Perimeter:P=a+b+cArea:A=12bhSum of Angles:A+B+C=180°Perimeter:P=a+b+cArea:A=12bhSum of Angles:A+B+C=180°
Right Triangle No Alt Text Pythagorean Theorem:a2+b2=c2Area:A=12abPythagorean Theorem:a2+b2=c2Area:A=12ab
Circle No Alt Text C=2πrCircumference:orC=πdArea:A=πr2C=2πrCircumference:orC=πdArea:A=πr2
Parellelogram No Alt Text Perimeter:P=2a+2bArea:A=bhPerimeter:P=2a+2bArea:A=bh
Trapezoid No Alt Text Perimeter:P=a+b+c+BArea:A=12(B+b)hPerimeter:P=a+b+c+BArea:A=12(B+b)h
Table C1 2 Dimensions
Name Shape Formulas
Rectangular Solid No Alt Text Volume:V=lwhSurface Area:SA=2lw+2wh+2hlVolume:V=lwhSurface Area:SA=2lw+2wh+2hl
Cube No Alt Text Volume:V=s3Surface Area:SA=6s2Volume:V=s3Surface Area:SA=6s2
Cone No Alt Text Volume:V=13πr2hSurface Area:SA=πr2+πrh2+r2Volume:V=13πr2hSurface Area:SA=πr2+πrh2+r2
Sphere No Alt Text Volume:V=43πr3Surface Area:SA=4πr2Volume:V=43πr3Surface Area:SA=4πr2
Right Circular Cylinder No Alt Text Volume:V=πr2hSurface Area:SA=2πr2+2πrhVolume:V=πr2hSurface Area:SA=2πr2+2πrh
Table C2 3 Dimensions
Order a print copy

As an Amazon Associate we earn from qualifying purchases.


This book may not be used in the training of large language models or otherwise be ingested into large language models or generative AI offerings without OpenStax's permission.

Want to cite, share, or modify this book? This book uses the Creative Commons Attribution License and you must attribute OpenStax.

Attribution information
  • If you are redistributing all or part of this book in a print format, then you must include on every physical page the following attribution:
    Access for free at
  • If you are redistributing all or part of this book in a digital format, then you must include on every digital page view the following attribution:
    Access for free at
Citation information

© Feb 9, 2022 OpenStax. Textbook content produced by OpenStax is licensed under a Creative Commons Attribution License . The OpenStax name, OpenStax logo, OpenStax book covers, OpenStax CNX name, and OpenStax CNX logo are not subject to the Creative Commons license and may not be reproduced without the prior and express written consent of Rice University.