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Triangle
A=½bh
Rectangle
A=lw
Trapezoid
A=½h(b1+b2)
Parallelogram
A=bh
Circle
A=∏r²
Surface Area of a Prism
Sum of the areas of all faces
Surface Area of a Cylinder
SA=2(∏r²)+2(∏r)h
Circumference
C=∏d=2∏r
Surface Area fo a Sphere
SA=4∏r²
Volume of a Prism
V=Bh
Volume of a Pyramid or Cone
V=1/3Bh
Volume of a Sphere
V=4/3∏r³
Pythagorean Theorem
A²+B²=C²
Simple Interest Formula
Interest=(Pricipal)(Rate)(Time)
Distance Formula
D=rt
Line Containing Two Points

  • Slope of Line
Y2-Y1
_____

X2-X1
Line Containing Two Points

  • Distance Between Two Points
√(X2-X1)²+(y2-Y1)²
Line Containing Two Points

  • Midpoint Between Two Points
(X1+X2 , Y1+Y2)
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