question_answer 38)

                  Pressure is a scalar quantity because                 (a) it is the ratio of force to area and both force and area are vectors.                 (b) it is die ratio of the magnitude of the force to area.                 (c) it is the ratio of the component of the force normal to the area.                 (d) it does not depend on the size of the area chosen.                

Answer:

                  (c, d) \[P=\,\frac{F}{A},\] where F is the component of the  force normal to the area A.