Find the value of all angles

Step-by-step explanation:

This means that <C and <F are congruent.

So 2x - 15 = x + 15             Add 15 to both sides

2x-15+15=x+15+ 15

2x = x + 30                        Subtract x from both sides

2x-x=x-x+30

x = 30  

I've taken the bottom 2 angles to be equal. The lettering says they

are

3, 12, 48, 384, 1536, 6144, 24576, 98304

step-by-step explanation:

just keep timing it by 4.

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 !