The document describes calculating the widths of two squares and their difference by taking square roots of numbers with a calculator. It instructs to take the square root of 41070 and 69266, round the results to 3 significant figures, and store in the calculator's memory cells a and b. Finally, it describes subtracting the values in memory cells b and a to calculate the difference between the widths, rounding the result to 3 significant figures.
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8calc5v2
1. Segment AB is the width of
the orange square, which is
the square root of 41070.
The calculator uses the
underscore symbol for roots.
We could type 41070_2 but if
we type 41070_ the calculator
supposes that we want a
square root.
11. Segment BC is the difference
between the two widths that
we have calculated. We need
to subtract the width of the
orange square from that of the
yellow one.
To subtract the number in cell
“a” from the number in cell
“b”, we type b-a.