Question 18
The figure shows 3 squares and a circle. The area of the largest square is $84\text{ cm}^2$. Find the area of the shaded region, in square centimetres.
Read the intended incidences in the diagram: the circle is inscribed in the outer square, the middle square is inscribed in the circle, and the shaded square joins the middle square’s side midpoints.
Read the intended incidences in the diagram: the circle is inscribed in the outer square, the middle square is inscribed in the circle, and the shaded square joins the middle square’s side midpoints.