Calculated Industries 4065 v3.1 User Guide - Manual (Page 47)

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CIRCLE AND ARC CALCULATIONS
Circle/Arc values can be solved by entering any two of the following
values: Arc Length/Angle, Diameter/Radius, Chord Length (Run),
and Segment Rise (Rise).
It is recommended that you clear the calculator (press o twice)
after calculating right-triangle solutions prior to beginning an Arc or
Circle solution.
Note: Circle/Arc solutions cannot be solved for the following cases:
• Entered Arc Length and Chord Length (Run)
• Entered Arc Length and Segment Rise (Rise)
Circumference and Area of a Circle
Find the area and circumference of a circle with a diameter of
11 Inches:
KEYSTROKE DISPLAY
o o 0.
1 1 i C DIA 11
INCH
C AREA 95.03318
SQ INCH
C CIRC 34-9/16
INCH
Arc Length — Degree and Diameter Known
Find the arc length of an 85° portion of a circle with a 5-foot diameter:
KEYSTROKE DISPLAY
o o 0.
5 f C DIA 5
FEET
0
INCH
8 5 a ARC 85.00°
a ARC 3
FEET
8-1/2
INCH
Arc Length — Chord Length and Segment Rise Known
Find the arc length and radius of a circle with a 3-feet 6-inch chord
length and 1-foot 3-inch segment rise.
KEYSTROKE DISPLAY
1. Enter the chord length of the segment as Run:
o o 0.
3 f 6 i R RUN 3
FEET
6
INCH
2. Enter the height of the segment as Rise:
1 f 3 i r RISE 1
FEET
3
INCH
3. Find the Radius:
Ç a (Radius) RAD 1
FEET
10-3/16
INCH
(Cont’d)