If a force of 15 newtons [N] is applied to a surface and the pressure is measured as 4,000 pascals [Pa], what is the area of the surface in units of square milimeters [mm2]?

The answer to the question is;

The area of the surface in units of square millimeters [mm²] is 3750 mm².

Explanation:

Here, it is necessary to note that the formula for pressure = Force/Area

Therefore the area is given by

Area = Force/Pressure

Where the force = 15 Newtons (N) and

The pressure = 4000 Pascals (Pa)

Then we have

Area = 15 N ÷ 4000 Pa = 0.00375 m²

Converting the area into mm² we have

1 m² = 1000000 mm² therefore

0.00375 m² = 1000000×0.00375 mm² = 3750 mm²

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.