Geometry formulas

Area of Rectangle

• A= LW

• A= 2LW

• A=1/2LW

• A=2+L+W

A= 1/2bh

• Area of Trapezoid

• Area of Triangle

• Area of Parallelogram

• Area of square

Area of a Circle

•  $A=\ \pi^{\ }r^2$  

•  $A=\ \pi r$  

•  $A=\ \pi2d$  

What is the formula for circumference?

• $C=\pi r$

• $C=\ 2r^2$

• $C=\pi d$

• $C=\pi rd$

What is the area of a Trapezoid?

• $A=\ \frac{1}{2}h\ \left(b1\ +\ b2\right)$

• $A=\ \frac{1}{2}\left(b1\ +b2\right)$

• $A=2h\left(b1\ +b2\right)$

• $A=\frac{1}{3}h\left(b1\ +b2\right)$