Using the approximation 3.14 for π what is the radius of a circle with circumference 40.8?

6.50

Step-by-step explanation:

C = 2πr

40.8 = 2(3.14)r

40.8 = 6.28r

r = 6.50

80π/3 or about 83.775

step-by-step explanation:

since a cone is 1/3 of a cylinder, we need to find the base's area. since area = πr^2, we get 16π. then, multiplying this by 5, we get 80π. dividing by 3, since the cone's volume is 1/3 of that of a cylinder's, we get 80π/3.

hope this !