The expression for Section modulus is given as shown below.

So$,$ for the cross section shown here of a beam,

the section modulus is

$m^3$

a$)5\mathrm{.}53{10}^{-4}$;

b$)8\mathrm{.}33{10}^{-4}{m}^3$;

c$)6\mathrm{.}35{10}^{-4}{m}^3$

d$)5\mathrm{.}33{10}^{-4}{m}^3$

a

b

c

d

How to solve this problem with equations.