Formulas Flashcards
1
Q
Sphere volume
A
4/3 pi R^3
2
Q
Sphere surface area
A
4 pi R^2
3
Q
Parallelogram
A
a*b
4
Q
Rhombus
A
ab/2
5
Q
Trapezoid
A
1/2(ab)*h
6
Q
Sum of interior angles
A
180*(n-2)
7
Q
Cone volume
A
1/3 * (Pi * r^2 * h)
8
Q
Diagonal of rectangle
A
SqRt (a^2 * b^2 * c^2)
9
Q
Diagonal of square
A
SqRt(3)*a
10
Q
45-45-90 triangle
A
1 : 1 : SqRt(2)
11
Q
30-60-90 triangle
A
1 : SqRt(3) : 2
12
Q
y = mx+b
A
y - y1 = (y2-y1)/(x2-x1) * (x-x1)
13
Q
Thale’s theorem
A
For a triangle inscribed in a circle with all 3 vertices on the circle’s circumference:
If one side is the diameter,
Then angle opposite diameter is 90 degrees
14
Q
Investment value with simple interest
A
V = P*(1 + rt)
15
Q
Investment value with compound interest
A
V = P*(1+r/n)^(nt)
