M10C Measurement Notes September 1st, 2013

Transcription

1 * Most of these values are ON your formula sheet! * conversion. Example 1: 40 inches to feet. Example 2: Example 3: 1.5 mi. to yards

2 It's a technique that is often used in the sciences when you have to solve a problem It involves setting up one large fraction where ALL the units EXCEPT the one you are converting to cancel out. Example 4: Example 5: - What are you trying to FIND - How do you plan to last fall, Emily was able to run at an average speed of 250 yards every minute. At that rate, how long would she expect to take to run 3 miles. Round your answer to the nearest tenth of a minute. her flower garden. If it costs $12.40 per foot to buy the materials for the wall and the flower garden has the following dimensions, how much will it cost to build in total? Round your answer to the nearest dollar. Additional Practice: Complete Handout

3 referant is just another way to the length of a thumb referants when using convenient to use: the tips of your fingers Even though in Canada we use the SI unit system, most consumer and You can blame the Let's run through some examples and see how you are at working for is an

4 Measurements can be expressed as X.Y cm or

5 halves sixteenths Measurements are expressed as X Y inch

6 SI units. (millimeter, centimeter, meter and kilometer) the One way you may have been taught how to convert SI units of length is to move the decimal point. places you need Example 1: Example 2: Example 3: between the key length units in SI: cm mm 1 km = 1000 m 1 m = 100 cm = 1000 mm 1 cm = 10 mm And then use proportions, multiplication or division to convert from one Example 4: km mm right answer of course!

7 In order to successfully convert between these two systems of measurement, we need to know how lengths in one system compare 1 inch = 2.54 cm 1 mi = 1.6 km 1 mile is exactly approximately 1.6 km: Use these values for converting. Example 5: How many miles is that? Round your approximately 128 km. Example 6:

8 The Tool Man" Taylor needs to construct four shelves that are 2100 mm long. He has already found just needs to buy the proper length. He has these 4 options all the boards have the Assuming that of length what is the p22: 16

9 1.4 Surface Area of Pyramids and Cones terms and Triangular faces Lateral faces of this shape? 2. Square Right Pyramid Base square are triangles How would you solve for the Formula on Formula Sheet for bases that are regular polygons:

10 Lateral faces are of this shape? The Great Pyramid of Giza is the oldest Ancient Wonders of the World. It also Earth un l the 14th century! square base with a side length of 230m. It was also encased in an outer layer of smooth white limestone. What was the total surface area of that limestone

11 4, 8 11, 16 20, 21

12 1.5 Volume of Pyramids and Cones Reviewing the surface area from Wednesday to solve problems with them. cones and lateral area lateral area

13 = (A )h Going back to the Pyramid at Giza, it originally was 147m tall and had a

14 4) In 2009, Ben and Jerry's Ice Cream ran a promo on If this waffle cone has circumference of 64 cm and a *1 L = 1000cm

15 of a cen meter. 8, 9 20, 21

16 1.6 Surface Area and Volume of Spheres to solve problems with them. Deriving the surface area formula for a sphere??

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18 Deriving the volume formula for a sphere

19 Example Problems: What is its total

20 , what is its 21, 23

21 1.7 Surface Area and Volume of Composites Things to keep in mind: All the relevant area and volume formulas for your simple shapes. How to break up complex objects into simpler objects

22 What is the