Round cake has a diameter of 30 cm. Angela places the cake on a circular cake board with a diameter 5 cm longer than that of the cake. What's the circumference

circumference of the cake board = 109.9 cm

Step-by-step explanation:

diameter of cake = 30cm

diameter of cake board = 5cm longer than 30cm = 5 + 30 = 35cm

radius cake board = diameter : 2 = 35 : 2 = 17.5 cm

radius of cake board = 17.5 cm

circumference of a circle = 2 * π * r (where π = 3.14)

circumference of a circle = 2 * 3.14 * 17.5 = 109.9 cm

Therefore the circumference of the cake board = 109.9 cm

the circumference is 35 pi