printf the value of pi is f pi pi2 2 pi..., Reported Questions, PHP

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Question:printf("The value of Pi is %f", PI);
$pi2 = 2 * PI;
printf("Pi doubled equals %f", $pi2);
This code produces the following results:

A The value of pi is 3.141592
Pi doubled equals 6.283184 
B The value of pi is 3.141592
Pi doubled equals 2*3.141592 
C The value of pi is 3.141592.
Pi doubled equals 6.283184. 
D The value of pi is 3.141592.
2 * PI

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Question:printf("The value of Pi is %f", PI); $pi2 = 2 * PI; printf("Pi doubled equals %f", $pi2); This code produces the following results:

A The value of pi is 3.141592 Pi doubled equals 6.283184

B The value of pi is 3.141592 Pi doubled equals 2*3.141592

C The value of pi is 3.141592. Pi doubled equals 6.283184.

D The value of pi is 3.141592. 2 * PI

A