Find the volume of this composite solid.

For this case we have that the figure shown is composed of a cylinder and a cone.

We have that the volume of a cylinder is given by:

Where:

A: It's the radio

h: It's the height

Substituting the values:

On the other hand, the volume of a cone is given by:

Where:

A: It's the radio

h: It's the height

Substituting the values:

Then, the total volume is:

Taking , we have to:

Option D

d

step-by-step explanation:

2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.