I am having trouble with this

x=16

Step-by-step explanation:

If the triangles are similar then their sides are in proportion.

Set the proportions 20/(3x+8)=(x-1)/(x-1+27)

solve for x,

cross multiply

20(x+26)=(x-1)(3x+8),

distribute

20x+520= 3x² +8x-3x-8,

combine like terms

3x²-15x-528=0

solve using quadratic formula

x=16 and x= -11 reject because we cannot have negative measurements

d

step-by-step explanation:

d

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 !