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MFM 1PI U6 D4 Area of Composite figures.notebook
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March 02, 2016
Warmup: What shapes are in the diagram?
last day: Applications of Pythagorean Theorem
Today: Area of Composite figures
Area of Composite Figures
What is a composite figure?
A figure made up of 2 or more regular shapes.
MFM 1PI U6 D4 Area of Composite figures.notebook
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What shapes can you see in this back yard plan?
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Ex. 1) Find the area of each composite figure.a) the key on a basketball court.
15 cm
33 cm
10 cm
20 cm
2 cm
15 cm
b) Find the area. Round to the nearest cm.
c)
17m
20 m
1. divide the figure into regular shapes. Identify the formulas needed.
2. Find the missing measurements
3. Calculate the areas and add them together.
1. divide the figure into regular shapes. Identify the formulas needed.
2. Find the missing measurements
3. Calculate the areas and add them together.
1. divide the figure into regular shapes. Identify the formulas needed.
2. Find the missing measurements
3. Calculate the areas and SUBTRACT the cut out area
MFM 1PI U6 D4 Area of Composite figures.notebook
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15 ft
30 ft
2 ft
d) Mrs. V. wants to sod her lawn. i)Determine how much sod she needs if one roll covers 4ft2. Don't forget that she has a circular fire pit and a trapezoidal deck.
ii) How much will it cost if one roll is $2.50?
1. divide the figure into regular shapes. Identify the formulas needed.
2. Find the missing measurements
3. Calculate the areas and add or subtract as necessary.
10 ft
12 ft
4. determine the # of rolls required.
practice: pg 1214 # 13ac, 4, 5c