Easy question, Easy Points

Topic Volume

Focus on question 15

738π cm^3

1458π cm^3

Step-by-step explanation:

The volume of a cylinder is V = πr^2 h, where r=radius and h=height.

a) V = πr^2 h

       = π6^2 20.5 = 36*20.5π = 738π cm^3

b) V = πr^2 h

   For this one, remember that diameter is half of radius. d = 18, r = 9.

   V = π9^2 18 = 81*18π = 1458π cm^3

5x + 5

step-by-step explanation:

you should always add the diagrams and graphs we cannot see. this particular question is kind of borderline because we can make a graph for you.

(f + g)x = -x^2 +3x + 5 + x^2 + 2x

(f + g)x = 5x + 5

the graph of z = 5x + 5 is shown below. always use desmos when in doubt.

2

step-by-step explanation: