Part A: If r = 4 units and s = 2 units, write an expression that can be used to calculate the surface area of the cone. (4 points) 580/= 4 united + r6

Part B: What is the surface area of the cone? Show your work. (6 points)

Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?

If 25% of y is 30, what is 60% of y?

When keisha installed a fence along the 200 foot perimeter of her rectangular back yard, she left an opening for a gate. in the diagram below, she used x to represent the length in feet of the gate? what is the value? a. 10 b. 20 c. 25 d. 30