Question

20 psi (pounds per square inch) equals about how many kPa (kilopascals)?
A. 138
B. 140
C. 20
D.50
O​

Answer 1

Answer: Option A

138 kPa

Step-by-step explanation:

By definition 1 psi (Pound per square inch) is equal to 6.895 Kpa (kilopascals).

So we use this relationship as a conversion factor:

$\frac{6.895\ kPa}{1\ psi}$

So to know how many kPa represent 20 psi we must multiply 20 psi by the conversion factor

$20\ psi\ *\ \frac{6.895\ kPa}{1\ psi}=137.895\ kPa$

If we round to the nearest integer we get: 137.895 kPa ≈ 138 kPa

The answer is the option A