##### Formulas for 3D Figures and Shapes

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created 10 years ago by jrogers
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Formulas for volume, surface area, area, etc. of 3D figures and shapes
updated 10 years ago by jrogers
Grade levels:
6th grade
Subjects:
math
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1 Pi (π)

3.14

2 Circumference of a circle

πd (3.14 x diameter)

3 Area of a circle

πr2 (3.14 x radius squared)

4 Perimeter of a square

side + side + side + side
4s

5 Area of a square

s2
s x s

6 Perimeter of a rectangle

2length + 2width
l + l + w + w

7 Area of a rectangle

lw
l x w

8 Perimeter of a triangle

s + s + s

9 Area of a triangle

1/2 base x height
bh/2

10 Surface area of a cylinder

2πr2 (2 x 3.14 x radius squared) + 2πrh (2 x 3.14 x radius x height)

11 Volume of a cylinder

πr2h (3.14 x radius squared x height)

12 Surface area of a rectangular prism

2(lw) + 2(lh) + 2(wh)

13 Volume of a rectangular prism

lwh
l x w x h

14 Volume of a cone

1/3 πr2h (3.14 x radius squared x height)