A sheet is 11 cm long and 2 cm wide. Circular pieces 0.5 cm in diameter are cut from it to prepare discs. Calculate the number of discs that can be prepared.

Number of disc along the length of sheet :

= $\dfrac{\text{Length of sheet}}{\text{Diameter of disc}} = \dfrac{11}{0.5}$ = 22 discs.

Number of disc along the width of sheet :

= $\dfrac{\text{Width of sheet}}{\text{Diameter of disc}} = \dfrac{2}{0.5}$ = 4 discs.

Total number of discs = 22 × 4 = 88.

Hence, number of discs formed = 88.