Radio Shack TRS-80 User Manual page 181

SAMPLE
ANSWER FOR
EXERCISE
3-3:
10
REM
*
CIRCUMFERENCE SOLUTION
*
20 P = 3.14
30 D = 35
40 C = P * D
50
PRINT "THE CIRCLE'S CIRCUMFERENCE IS";C; "FEET."
SAMPLE
RUN FOR
3-3
THE CIRCLE'S
CIRCUMFERENCE
IS
109.9 FEET.
Note: Since n
is
not included
in
Radio
Shack's
LEVEL
I
BASIC,
we
have
to set a variable
(in this
case
P was
used) equal to the value of
pi
(3.14)
SAMPLE ANSWER FOR
EXERCISE
34:
10
REM
*
CIRCULAR AREA SOLUTION *
20 P =
3.14
30
R
=
5
40A=P*R*R
50
PRINT "THE CIRCLE'S AREA IS'*;A; "
SQUARE
I
NCHES
.
"
SAMPLE
RUN FOR
34
THE
CIRCLE'S AREA
IS
78.5 INCHES.
Note:
The
LEVEL
I
BASIC
system does not have a function
which
means
"raise to the
power"
to
handle
R 2
.
(LEVEL
II
BASIC
does.)
In easy cases
like this
one,
we
can simply
use
R
times
R
(R*R).
If
you
have
a
LEVEL
II
system,
you'll learn
how
to
use the simple
EXPO-
NENTIATION
function
in
the
USER'S
MANUAL
for
LEVEL
II.
179