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Circle Calculations
Circumference and Area
Find the circumference and area of a
circle having a diameter of 10 inches.
Step/Keystrokes
1. Clear calculator and enter diameter:
[On/C] [On/C]
10 [Inch] [Circ]
2. Find circle area and circumference:
[Circ]
[Circ]
3. Convert to decimal inch:
[Inch]
Arc Lengths
Find the arc length of an 85° portion of
a circle with a 5 foot diameter.
Step/Keystroke
1. Clear calculator and enter diameter:
[On/C] [On/C]
5 [Feet] [Circ]
2. Enter arc angle then find arc length:
85 [Conv] [Circ] 3 FT 8-1/2 IN ARC
3. Convert to decimal feet:
[Feet]
32 – ConcreteCalc™
10 IN DIA
78.53982 SQ IN
31-7/16 IN CIRC
31.41593 IN
5 FT 0 IN DIA
3.708825 FT
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