The Facts On File Algebra Handbook

(Marvins-Underground-K-12) #1

CHARTS & TABLES Area – Arithmetic Sequence and Common Difference


CHARTS & TABLES Area – Arithmetic Sequence and Common Difference


Area (continued)
Rhombus
Area = (length of diagonal 1 ×length of diagonal 2) ÷ 2
A=d 1 d 2 ÷2
Surface of a sphere
Area = π×square of the diameter
A=πd^2
Surface of a cylinder
Area = 2 ×π×square of the radius + 2 ×π×the radius ×the height
A= 2πr^2 + 2πrh
Trapezoid
Area = height ×length of each parallel side aand b÷2
A=h(a+b)÷2
Triangle
Area = base ×height ÷ 2
A=bh÷2

Arithmetic Sequence and Common Difference
An arithmetic sequence is a set of numbers or terms that has a pattern running
through it, and the pattern has a common difference. This means that when one
number or term in an arithmetic sequence is subtracted from the number or term that
immediately follows it, the result is always the same: it is the common difference.
Here are some arithmetic sequences, and their common differences:
Arithmetic Sequence Common Difference
2, 4, 6, 8, 10, ______ 2
4 – 2 = 2
6 – 4 = 2
8 – 6 = 2
10 – 8 = 2
(continues)
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