Area, Surface Area, and Volume Formulas

Rotation 180 degrees

(x,y)= (-x,-y)

Rotation 90 degrees

(x,y)= (-y,x)

Rotation 270 degrees

(x,y)= (y,-x)

Area of a trapezoid

A=(b1+b2)h/2

Area of a circle

A=3.14r^2

Area of a rectangle/ parallelogram

A=bh

Area of a triangle

A=bh/2

Formula for compound interest

B=p(1+r)^t

Formula for simple interest

I=prt

Formula for Midpoint

M(x2+x1 /2, y2+y1 /2)

Surface area of a pyramid

SA=1/2Pl+B

Surface area of a cylinder

SA=2(3.14)r^2+3.14dh

Surface area of a triangular prism

SA=2B+Ph

Surface area of a rectangular prism

SA=2lw+2lh+2wh

Surface area of a cone

SA=3.14rl+B

Surface area of a sphere

SA=4(3.14)r^2

Volume of a cone/pyramid

V=1/3Bh

Volume of a cylinder

V=3.14r^2h

Volume of a sphere

V=4/3(3.14)r^3

Volume of a prism

V=Bh

translation

add what u must move to (x,y). [EX- move (2.,-3) up one to the right 2= (4,-2)]

In nPr, r=

amount of times you want

<: Up or down?

down

30-60-90 triangle (hyp and ll)

hyp=2 x shorter leg(sl) longer leg= sl x square root of 3

45-45-90 triangle (hypotenuse)

hypotenuse=leg x square root of 2

Formula for slope

m=y1-y2/x1-x2

nCr

nPr/rPr

In nPr, n=

permutations of n objects

>: Up or down?

up