An ice cream stand is 1.38 kilometers from the starting point of a bike path. brian rides his bike from the starting point to the ice cream stand and back to the starting point 3 times. how many kilometers does brian ride his bike?

8.28

You have to do 1.38 times 2 and then times 3

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 !

80

step-by-step explanation: