1. Math CC7/8 – Be Prepared On Desk: 1. Pencil 2. Calculator 3. Math Journal 4. F&W Learning Log 5. Parent Signatures? Learning Log: 1. HW: p. 83, #3, 4 –vol only, 7a, 30-34 - Pre/Post-Assess. Goals & Signature– Late! -F&W Quiz – Parent Sig. Late! *Quiz Retake – Friday in class

2. Warm up Lesson 4.2 Vol. of Cylinders! Begin HW? Tasks for Today

3. 1. 10b – 45 = 3(b -15)2. 4(w - 6) = 3(w + 1) Solve the equations. What is the slope of the line represented by the equation What is the y-intercept of the line represented by the equation 2323 y = x - 4 2323 Warm Up (no calculator!)

4. More Warm Up (no calculator!)

6. V = (3.14) (r) (r) (h) We skipped this part of 2.1!

7. The cylinder with the larger base has a larger volume The cylinder with the greater height has a smaller volume.

8. What is the area of the base? (B) What is the volume of the cylinder? What is the formula for volume of a cylinder? Suppose that a cylinder has a radius of 5 cm and a height of 12 cm. B = (3.14) 5 x 5 V = 78.5 x 12 = 942 cubic cm

9. The cylinders have different areas of the base (B) and different heights, so the volumes will be different. So… if you build 2 cylinders from the same rectangle, the one with the larger base will have the greatest volume. Begin HW : p. 83, #3, 4 – volume only, 7a, 30 – 34