In a chemistry lab experiment, you use the conical filter funnel shown at the right. how much filter paper do you need to line the funnel?

Step-by-step explanation:

we know that

The lateral area of a cone is equal to

where

r is the radius of the base

l is the slant height

we have

----> the radius is half the diameter

To find the slant height apply the Pythagoras theorem

substitute the values

Find the lateral area

assume

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.