Question

Miko takes a cupcake tray, measures the bottom of one of the cups, and calculates that it has a circumference of 18.84 centimetres. What is the cup's bottom area? Use 3.14 for π

Answer 1

Answer:

2πr=18.84

2×3.14×r=18.84

6.28r=18.84

r=18.84÷6.28

r=3

You'd bottom area=πr^2Putting value of r

πr^2=3.14×9

=28.26cm^2