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13 terms

6th grade math formulas

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perimeter of a square
P = 4 × S
area of a square
A = S²
perimeter of a rectangle
P = 2×L⁺2×W
area of a rectangle
A = L×W
circumference of a circle (use when you know the radius)
C = 2 ¶ R
circumference of a circle (use when you know the diameter)
C = ¶ × D
radius
D ÷ 2
diameter
2 × R
area of a circle
A = ¶ × R²
area of a parallelogram
A = B ×H
area of a triangle 1
A = B × H ÷ 2
area of a triangle 2
A = ½ × B × H
volume of a rectangular prism
V = L × W × H