Help with solving Order of Ops Question

I'm stuck on a question in my assignment that's asking me to create a program to calculate the Area-cubed of a cylinder knowing that
Pi = 3.14159 and Radius = 2.2
the formula is 4/3 Pi R^3
and this is the code I have written down:

Code:

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#include<stdio.h.>
#include<math.h>
main()
{
float Pi = 3.14159, num1 = pow(2.2,3), area;
area = 4 / 3 * num1;
printf("%f", area);
getch();
}

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I'm getting different answers if I instead make the 4 / 3 into 1.25, so I was wondering how do I signify the operations in the order it should be in, if it should be according to PEMDAS(which i believe it should be)?

Thanks in Advance:D!

Be wary of integer division here, e.g., change 4 / 3 to 4.0 / 3.0

Quote:

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Originally Posted by laserlight

Be wary of integer division here, e.g., change 4 / 3 to 4.0 / 3.0

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I changed the ints to floating point values and I'm getting a number like 14.121337 where it should be somewhere closer to 33-34

Oh, but of course, mathematically, 4/3 is not equal to 1.25.

Plus, I note that you computed 2.2 to the power of 3, but did not multiply by pi.

Quote:

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Originally Posted by laserlight

Oh, but of course, mathematically, 4/3 is not equal to 1.25.

Plus, I note that you computed 2.2 to the power of 3, but did not multiply by pi.

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Of course it doesn't! haha thanks for the help.

Looks more like the formula of volume of sphere. If you are working with a cylinder where's the height parameter?