π

π



Basics

π = pi
π = approximately 3.141592654 = approximately 3.14
π = ratio of a circle’s circumference to its diameter
π is primarily a multiplier.

When π is immediately adjacent to a number, letter or parenthesis, an invisible multiplication sign is in force.
5π = 5 × π
π5 = π × 5
rπ = r × π
πr = π × r
π(5) = π × 5
5(π) = 5 × π
π(r) = π × r
r(π) = r × π

When asked to convert an answer from π to decimal form, use the toggle button toggle .

π is the π command.


Question

What is 5 × π?

Answer

Calculator Click What You See Comment
clear blinker clears screen
5 × π 5*π
enter Answer
π


Question

What is π × 5?

Answer

Calculator Click What You See Comment
clear blinker clears screen
π × 5 π*5
enter Answer
π


Question

In decimal form, what is 5 × π?

Answer
15.70796327

Answer Process
See Toggle.
5π ⇔ 15.70796327

Calculator Click What You See Comment
clear blinker clears screen
5 × π 5*π
enter
toggle 15.70796327 Answer
(Toggle)
π


Question

With reference to the question above, round your answer to the nearest hundredth.

Answer
15.71

Answer Process
See Rounding.
15.70796327  15.71


Practice – Questions
1.  What is 2 × π?

2.  What is π × 2?

3.  In decimal form, what is 2 × π?

4.  With reference to Question 3, round your answer to the nearest hundredth.

5.  With reference to Question 3, round your answer to the nearest tenth.

6.  What is 8 × π?

7.  What is π × 8?

8.  In decimal form, what is 8 × π?

9.  With reference to Question 8, round your answer to the nearest hundredth.

10.  With reference to Question 8, round your answer to the nearest tenth.


Practice – Answers
1.  2π

2.  2π

3.  6.283185307

4.  6.28

5.  6.3

6.  8π

7.  8π

8.  25.13274123

9.  25.13

10.  25.1

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