Sharp EL-W516B

Calculator Activity
PARENTHESES AND EDITING
OBJECTIVE:
To perform basic operations with parentheses by finding the volume of a
sphere, by recalling the expressions, and editing them to perform a new
calculation.
The volume of a sphere is defined to be Volume
3
3
4
r


, where
r
is the
radius of the sphere.
1. Given the radius is
2
find the volume of the sphere.
STEP 1: Enter






3
4
by pressing
.
STEP 2: Insert the pi symbol by pressing
.
STEP 3: Enter
2
by pressing
.
STEP 4: Raise
2
to the third power by pressing
and then
.
STEP 5: Calculate the answer by pressing
.
2. Edit the previous equation and solve the volume of the sphere given
the radius is 1. Then co
nvert the answer to a decimal
STEP 1: Recall the previous equation by pressing
or
.
STEP 2: Move the cursor so it is to the immediate right of the third
power.
STEP 3: Delete the power, the parenthesis, the 2, and the square root by
pressing
five
times.
STEP 4: Enter the number 1 by pressing
followed by
.
STEP 5: Raise 1 to the third power by pressing
.
STEP 6: Calculate the answer by pressing
.
STEP 7: Press
to convert it to an improper fraction. Press
one more time to convert it t
o a decimal.
16