# Geometry Formulas

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 Author: jhahl ID: 109338 Filename: Geometry Formulas Updated: 2011-10-16 14:15:43 Tags: GRE Geometry Formulas Folders: Description: GRE Math Prep Show Answers:

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1. Square
• Perimeter = 4a
• Area = a2
2. Rectangle
• Perimeter = 2b + 2h or 2(b + h)
• Area = bh

• Perimeter = 2a + 2b or 2(a + b)
• Area = bh

• Perimeter = a + b + c
• Area = .5bh

• Perimeter = 4a
• Area = ah
• Perimeter = b1 + b2 + x + y
• Area = .5h(b1 + b2)
• Circumference = (3.14)d or (2)(3.14)(r)
• Area = (3.14)(r2)
• Surface Area = 6a2
• Volume = a3
• Surface Area = 2(lw = lh + wh)
• *Or SA = (perimeter of the Base)h + 2(Area of the Base)

• Volume = lwh
• *Or V = (Area of the base)h
3. Surface Area = (perimeter of the Base)h + 2(Area of the Base)

Volume = (Area of the Base)h
• Surface Area = (Perimeter of the Base or Circumference)h + 2(Area of the Base)
• *Or SA = 2(3.14)rh + 2(3.14)(r2)
• *Or SA = 2(3.14)r(h + r)

• Volume = (Area of the Base)h
• *Or V = (3.14)(r2)(h)
• Surface Area = 4(3.14)(r2)
• Volume = 4/3(3.14)(r2)

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