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 43 r 3 , where r is the radius of the sphere.
1. Given the radius is 
2 find the volume of the sphere.
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STEP 1: Enter by pressing. 3
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 convert 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 to a decimal.
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