What is the value of the expression? y=6 z=2 3y-z y+5z. a)1 b)3 c)4 b)16

I'm being volume of cylinder with 13 in. radius and 30 in height answer choices in pic

Acircular city park has a sidewalk directly through the middle that is 111 - feet long. if each bag of fertilizer covers 50 square feet, then determine how many bags of fertilizers the parks and recreation department needs to use to cover the circular park. ignore all the sidewalks around and through the park.

Which is the scale factor proportion for the enlargement shown?