The following pie-chart shows the sales in a restaurant in a day, in percentage terms.

If the total number of items sold in a day is 100, then what is the central angle made by the sector giving data about the sale of 'Sandwich' in the pie-chart?

72°

Total number of items sold in a day = 100

Central angle corresponding to sale of sandwich = \(\frac{20 }{100}\) × 360°

= 72°