GEOMETRY

• Area


  space occupied by a flat shape or surface of an object (Multiply the sides by each other.)
• perimeter


  the total length around the outside of a shape ( you add together the lengths of all the sides)
• volume 


  the amount of space occupied by any three-dimensional solid. (multiply the area of the base times the height)
• Volume is measured in cubic units.
• surface area


  the amount of space covering the outside of a three-dimensional shape.(find the surface area of each of the object's individual faces and then adding the measurements together.)
• circumference


   the distance around a circle or the length of a circle.
• Circumference = π× Diameter

  Circumference = 2πr.
• area of square

  $a=$$s^2$
• Area of Triangle


  $a=$$bh/2$
• Area of rectangle


  $a=$$lw$
• Area of parallelogram


  $a=$$bh$
• Area of a trapezoid


  $a=$$1/ 2[(a+b)h]$
• Perimeter of a square


  $P=$$4s$
• Perimeter of a triangle

  $P=$$a+$$b+$$c$
• Perimeter of a rectangle

  $P=$$2l+$$2w$
• Perimeter of a parallelogram

  $P=$$2a=$$2b$
• Perimeter of a trapezoid

  $P=$$a+$$b+$$c+$$d$
• V = 4/3 π r³

  SA=4πr²

  
• V=bh

  
• V=(1/3) × π × r² × h.

  SA= πr2+πrl

  
• V=π r² h,

  SA=2 π r(r + h)

  
• v= s^3

  SA=6s^2