Answer:
63N
Explanation:
To calculate the weight (force) that an object exerts, the formula is used:
Pressure = Force / Area
Where; P = pressure
F = applied force
A = the surface area the
force is applied to
According to the question; P= 21N/m^2,
F= ?, a = 3m^2
Force = pressure × area
Force = 21 × 3
Force = 63N
Hence, the weight of the object is 63N
