Geometry Flashcards
1
Q
Area of Trapezoid
A
((b1+b2)(h))/2
2
Q
Area of Regular Hexagon
A
(3√(3)s²)/2
s=side length
3
Q
Area of Regular Polygon
A
(ns²)/(4tan(180/n))
n=number of sides, s=side length
4
Q
Volume of Cone
A
(πr²h)/3
5
Q
Surface Area of Cone
A
πr²+πrl
l=slant height
6
Q
Volume of Sphere
A
(4/3)πr³
7
Q
Surface Area of Sphere
A
4πr²
8
Q
Volume of Pyramid (base of any polygon, assume square if not specified, tetrahedron is triangle)
A
(bh)/3
b=AREA of base, h=height
9
Q
Surface Area of Pyramid
A
2sl+b
s=length of a side of the base, l=slant height, b=area of the base
10
Q
Volume of Cylinder
A
πr²h
11
Q
Surface Area of Cylinder
A
2πr²+2πrh
12
Q
Distance Formula
A
√((x2 −x1)² +(y2 −y1)²)
13
Q
Heron’s Formula (Area of Any Triangle)
A
√(s(s-a)(s-b)(s-c))
s=(a+b+c)/2 (semiperimeter)
14
Q
Law of Sines
A
a/sinA=b/sinB=c/sinC
15
Q
Law of Cosines
A
c²=a²+b²-2abcosC
