Final answer:
To find the value of P when T = 10, substitute the value of P into the formula P = 312.
Step-by-step explanation:
The formula given is P = 312. The question asks us to find the value of P when T = 10. Since the formula does not have T in it, we can simply substitute the value of P into the formula. Therefore, the value of P when T = 10 is 312.