What Pressure Will Be Measured (In Pa)if a Gas Is $\pi$

What pressure will be measured (in Pa) if a gas is exerting a force of 10.00 N on a mercury barometer with an inner diameter of 10.00 mm? Recall that the area of a circle is A = $\pi$ r²,1 N = 1 kg m/s²,and 1 Pa = 1N/m².

A) 3.183 $\times$ 10⁴ Pa
B) 1.273 $\times$ 10⁵ Pa
C) 3.183 $\times$ 10^-2 Pa
D) 1.273 $\times$ 10^-2 Pa