The following pie chart displays sales of various items in a shopping centre for the first quarter of the year. What angle of the circle must be occupied by the category of sales of food items?

Sales of food items make up 50% of the sales.

The angle occupied for food items in the circle can be calculated as follows:

$\begin{array}{rcl} & =& {360}^o\times 50\%\end{array}$
$\begin{array}{rcl} & =& {360}^o\times \frac{50}{100}\end{array}$
$\begin{array}{rcl} & =& {180}^o\end{array}$

Therefore, Food sales will cover 180^o of the circle.