Areas

• Area of square:

  sides^2
• Trapezoid:

  (A+b)/2 x h
• Rectangle:

  b x h
• Triangle:

  1/2 x b x h
• Circle:


  Pie x r^2
• Sector:

  1/2 x r^2 x angle
• Area of sector= x/360 x area of full circle(pie x radius squared)