25 A girl goes on a bike ride for four hours. The graph shows her journey.
A
50
40
Distance (km)
30
20
10
4
0
0
2
3
Time (b)
Find her average speed for the whole journey.​

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 !

answer: i don't understand it

step-by-step explanation: sorry