Question

A force of 300 N, while acting on an area A, produces a pressure of 1500 Pa. What is the magnitude of A in cm2 ?

Answer 1

pressure = force/ area

Therefore, area = force/ pressure

area = 300N / 1500 Pa = 1 / 5 sq.m

Now, 1m = 100cm.

Therefore, 100×100/5 = 2000 sq.cm

Answer 2

force, F = 300N

Area = A

presssure, Pa = 1500 pa

$pressure = \frac{force }{area}$

$area = \frac{force }{pressure} = \frac{3000}{1500} = \frac{1}{5} = 0.2m^2$

on converting $0.2m^2$ into $cm^2$

$0.2 * 100*100$ = $2000cm^2$

the magnitude of A is  $2000cm^2$

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