Square Roos; Using Pi - HP -67 Owner's Handbook Manual

Function Keys 89
Square Roots
To calculate the square root of a numberin the displayed X-register,
press [l (). For example, to find the square root of 16:
Press Display
16 11 (3
To find the square root of the result:
Press Display
0E
Squaring
To square a number in the displayed X-register, press £ (xJ. For
example, to find the square of 45:
Press Display
48
To find the square of the result:
Press Display
a 4100625.00
Using Pi
The value 7 accurate to 10 places (3.141592654) is provided as a
.fix.ed constant in the HP-67. Merely press @3 whenever you need
1t in a calculation. For example, to calculate 37
Press Display