The centre of a doughnut is removed and formed to make a sphere of dough with diameter 2.5 cm. A batch of these spheres is to be covered in a sugar glaze. There is enough glaze to cover an area of 4710 cm^2. How many spheres can be glazed?

2 answers

A=4πr2

A = 4 * 3.14 * 1.25^2

A = 12.56 * 1.5625

A = 19.625 sq. cm.

4710 / 19.625 = _______ spheres
240 spheres