User guide

User’s Guide – 37
Circular Solutions
Sewing—Yardage of Material
You want to sew a round tablecloth and
need to order material. If the table mea-
sures 48 inches in diameter and you want it
to hang over the table by 12 inches (24 inch-
es on both sides), what is the total square
yardage of material you’ll need? What is the
cost of material, at $11 per square yard?
Steps Keystrokes Display
Clear calculator [On/C] [On/C] 0.
Enter circle 48 [Inch] [+]
diameter 24 [Inch] [=] 72
INCH
Find circle area [Circ] [Circ]
AREA 4071.504 SQ INCH
Convert to sq yds [Conv] [Yds] 3.141593 SQ YD
Find total cost [x] 11 [Conv] [
•
] $ PER 34.56
Arc Lengths
Find the arc length of an 85° portion of a
circle with a 5 foot diameter.
Steps Keystrokes Display
Clear calculator [On/C] [On/C] 0.
Enter diameter 5 [Feet] [Circ] DIA 5-0 FEET INCH
Enter arc angle,
find arc length 85 [Conv] [Circ]
ARC 3- 8-1/2 FEET INCH
Convert to decimal feet [Conv] [Feet] 3.708825 FEET
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