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## Homework Statement

Calculate the moment of inertia in the OO' axis of the following figure (image attached).

## Homework Equations

The relevant equations are in the image,

except:

**I = I**

_{cm}

**+ m.h**

^{2}(formula of moment of inertia to change the axis from the centre of mass to a parallel axis).

## The Attempt at a Solution

I tried to find the moment of inertia of each figure separately/individually depending of the OO' axis by the formula give in "relevant equations" then sum all up to find the total moment of inertial of the system. Is this right? I'm not sure how to evidence this is correct