Math at Work 11 Formula Sheet
Linear Conversion Factors
Imperial to Metric
Imperial
1 ft = 12 in
1 yd = 3 ft
1 mi = 1760 yd
Tear-out
Page
Metric
1 cm = 10 mm
1 m = 100 cm
1 km = 1000 m
1 in = 2.54 cm
Area/Surface Area and Volume Formulas for 2-D and 3-D Figures
Rectangle
Triangle
Circle
a
c
r
b
P = a+b+c
bh
A= 2
P = 2l + 2w
Fold and tear along perforation.
h
A = lw
Rectangular Prism
C = 2 rr
A = rr 2
Trianglular Prism
Square-Based Pyramid
s
h
s
h
w
l
SA = 2lw + 2lh + 2wh
V = lwh
Cylinder
h
wwa
l
b
w
SA = lw + wh + 2ls
lwh
V= 2
SA = b 2 + 2bs
b2 h
V= 3
Cone
Sphere
s
h
b
r
r
SA = 2rr 2 + 2rrh
V = rr 2 h
y2 - y1
rise
slope = run =
x2 - x1
Pythagorean Theorem
c = a +b
2
2
2
SA = rr 2 + rrs
rr 2 h
V= 3
Simple Interest
I = Prt
Compound Interest
nt
A = P b1 + nr l
SA = 4rr 2
4rr 3
V= 3
opposite
sin A = hypotenuse
adjacent
cos A = hypotenuse
opposite
tan A = adjacent