Mrs. Brown Maternity Leave 8th Week 3 Mrs. Brown Maternity Leave

Day 1: Volume of a Cylinder When finding the volume of a cylinder use the following formula:

Example: V= 3.14(3)(3)(5) V= 141.3

Example On this example they give you a diameter, you will have to divide that in half since the formula calls for the radius: R= 5.5 V= 3.14(5.5)(5.5)(16) V=1519.76

Example A square bead has a cylinder shape cut out of the middle. If you want to find the volume of the bead, you will need to find the volume of each and subtract: The cube is 10X10X10 so its V=100 The cylinder has a diameter of 3, so its radius is 1.5 The Cylinders V=3.14(1.5)1.5(10) - they have the same height Of the cylinder is V=70.65 Therefore is we subtract the Volume of the bead is 100-70.65 = 29.35

Example: When finding the volume of half a cylinder use the given formula and divide by 2! If the diameter is 10, the radius is 5! V= 3.14(5)(5)(12) =942/2= 471 Remember Volume is always in measurement cubed!

Practice P593 and 594 (1-6) All practice work may be done with your partner and with a calculator. If you are not behaving and focusing on the math, this privilege may be taken away by the teacher.

Day 2: Volume of a cone When finding the volume of a cone use the following formula:

Example: V= 1/3(3.14)(3)(3)(11) V= 103.63

Example In this example they give you the diameter of 18, so you will need to use the radius of 9. V= 1/3(3.14)(9)(9)(21) V= 1780.38

Example When you have more than one figure you need to find the volume of each and then add them together! Cone: 1/3(3.14)(5)(5)(13) V=340.17 Cylinder= 3.14(5)(5)(2) V=157 Total: 497.17

Practice: P601 (1-8) All practice work may be done with your partner and with a calculator. If you are not behaving and focusing on the math, this privilege may be taken away by the teacher.

Day 3: Volume of a Sphere When Finding the Volume of a Sphere Use the following Formula:

Exmaple: V= 4/3(3.14)(2)(2)(2) V= 33.49

Example: On this example is gives you the diameter of 45, so you will need to cut that in half and use the radius of 22.5. V= 4/3(3.14)(22.5)(22.5)(22.5) V= 47688.75

Example: Half of a Sphere is also called a Hemisphere. You would find the Volume and divide by 2! V= 4/3(3.14)(6)(6)(6) V= 904.32/2 V=452.16

Practice: P 609 (1-9) All practice work may be done with your partner and with a calculator. If you are not behaving and focusing on the math, this privilege may be taken away by the teacher.

Day 4: Review Watch the following videos: https://www.youtube.com/watch?v=qJwecTgce6c&t=452s https://www.youtube.com/watch?v=KdQi3Q1teZU https://www.youtube.com/watch?v=rP7ZjyYwqHo https://www.youtube.com/watch?v=UTQjzA9BQeM

Practice P595 (10-14) P603 (15-20) P611 (19-22) All practice work may be done with your partner and with a calculator. If you are not behaving and focusing on the math, this privilege may be taken away by the teacher.

Day 5 Quiz: Use your packet of notes to complete the quiz. You have 40 minutes. There are NO RETAKES for open note quizzes!!!