SPW Product Catalogue 2019

FACTS & FIGURES
MATHEMATICAL SYMBOLS
Plus or Positive
Approximately Equal To
Less Than or Equal To
Difference
Minus or Negative
Of the Order Of or Similar To
Square Root Of
Therefore
Plus or Minus
Positive or Negative
Greater Than
Infinity
Pi
Multiply By
Less Than
Proportional To
Parallel To
Divided By
Not Greater Than
Sum Of
Perpendicular To
Equal To
Not Less Than
Product Of
Is To (Ratio)
Not Equal To
Greater Than or Equal To
6
SH
d
h
R
D
Frustum of a Right Cone
Apex Height = H, H = D x h
D - d
Side Height = SH,
SH = √R 2 + h 2
H
H d
h
S
D
Frustum of an Oblique Cone
Apex Height = H,
H = D x h
D - d
Horizontal Distance = Y,
Y = D x S
D - d
b
a
c
Pythagoras Theorem
a = √c 2 - b 2
b = √c 2 - a 2
c = √a 2 + b 2
D
Square Plate from Circular Plate
For the area of the largest square
plate that can be cut from a circular
plate
A = D 2
2
S
S
Length of side of largest square
plate.
S = 0.7071 x D, D = 1.4142 x S
GEOMETRIC SHAPES - PERIMETERS AND AREAS
S
S
S
Square S
Perimeter = P
P = 4 x S
Area = A
A = S x S
A = S 2
S
S
S
S
S
S
R
D
B
B
Rectangle
Perimeter = P
P = 2 (B + H)
Area = A
A = B x H
R
D
H
H
H
B
B
H
Triangle
Perimeter B = P B
P = Sum of 3 sides
Area = A
A = B x H
2 B
H
B
L
H
L
b
c
a
b
c
Scalene Triangle
Perimeter = P a
P = a + b + c
Area = A
A = √S (S - a) (S - b) (S - c)
S = a + b + c
B
B
TECHNICAL
Equilateral Triangle
Perimeter = P
P = 3 x S
Area = A
A = 0.433 L x S 2
2
L
Circle
Perimeter = P
P = π x D
D = P
π
Area = A
A = π x D 2
4
A = πR 2
Trapezium
Perimeter = P
P = Sum of 4 Sides
Area = A
A = H x (L + B)
2
Hexagon
Perimeter = P
P = 6 x S
Area = A
A = 0.866 x B 2
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