Squaring Up
Assume you want to “square-up” forms
for a concrete foundation measuring 45
feet 6 inches by 24 feet 4 inches. In order
for the forms to be square, what should
both of the diagonal measurements be?
(You can use the Pythagorean theorem to
solve the next two problems. See the dia-
gram at the bottom of the next page.)
Steps
Keystrokes
Display
Clear calculator [On/C] [On/C]
0.
1 — Find 1st side (a)
Find a
2
45 [Feet] 6 [Inch]
[Conv]
[
]
2070.25
SQ FEET
Put in memory [M+]
M
2070.25
SQ FEET
2 — Find 2nd side (b)
Find b
2
24 [Feet] 4 [Inch]
[Conv]
[
]
M
592.1111
SQ FEET
Put in memory [M+]
M
592.1111
SQ FEET
3 — Solve for 3rd Side (c)
Recall a
2
+ b
2
[Rcl] [M+]
M
2662.361
SQ FEET
Find c
[
]
M
51 7-3/16
FEET INCH
34 – Pocket Handyman
®
IV
