Mathematical Equations

Question 1

What is the system of units in technology?

Answer 1

Tera - x10 /\12
Giga - x10 /\9
Mega - x10 /\6
Kilo - x10 /\3
Milli = x10 /\ -3
Micro - x10 /\-6
Nano - x10 /\ -9
Pico - x10 /\ -12

Question 2

Calculating area of rectangle/square

Answer 2

length * width

Question 3

Calculating area of a circle

Answer 3

Pi * R/\2

Question 4

Calculating circumference of a circle

Answer 4

Pi * 2R

or Pi * D

Question 5

Area of a triangle

Answer 5

1/2 * base * height

Question 6

Trigonometry

Answer 6

Sin(x) = O / H
Cos(x) = A / H
Tan(x) = O / A

Question 7

How to calculate tolerance?

Answer 7

Acceptable values each side of required range that allows for tolerance to be acceptable.

eg. 1000mm +/- 2mm =

1002mm (biggest)
998mm (smallest)

Question 8

Standard form?

Answer 8

Number under 10 * 10 /\ number

eg. 3.2 * 10/\3 = 3200.