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Main Idea/Vocabulary composite figure Find the area of composite figures.

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Presentation on theme: "Main Idea/Vocabulary composite figure Find the area of composite figures."— Presentation transcript:

1 Main Idea/Vocabulary composite figure Find the area of composite figures.

2 KC

3 Example 1 Find the Area of a Composite Figure Find the area of the composite figure. Round to the nearest tenth. The figure can be separated into two semicircles and a rectangle.

4 Example 1 Find the Area of a Composite Figure Answer: The area of the figure is about or square centimeters. Area of one semicircleArea of rectangle

5 1.A 2.B 3.C 4.D Example 1 A.15.6 ft 2 B.16.2 ft 2 C.16.8 ft 2 D.17.1 ft 2 Find the area of the composite figure. Round to the nearest tenth.

6 Example 2 GARDENING The dimensions of a flower garden are shown. What is the area of the garden? The garden can be separated into a rectangle and two congruent triangles.

7 Example 2 Answer: The area of the garden is or 45 square feet. Area of rectangleArea of one triangle

8 1.A 2.B 3.C 4.D Example 2 A.48 ft 2 B.56 ft 2 C.64 ft 2 D.70 ft 2 GARDENING The dimensions of a flower garden are shown. What is the area of the garden?

9 Example 3 Find the Area of a Shaded Region Find the area of the shaded figure. Round to the nearest tenth if necessary. Find the area of the rectangle and subtract the area of the two triangles.

10 Example 3 Find the Area of a Shaded Region Answer: The area of the shaded region is 192 – 48 or 144 square inches. Area of rectangleArea of triangles A=16 ● 12ℓ = or 16, w = or 12 A=192Simplify.A=48Simplify.

11 1.A 2.B 3.C 4.D Example 3 A.92.5 cm 2 B.80.5 cm 2 C.61 cm 2 D.39 cm 2 Find the area of the shaded portion of the square. Round to the nearest tenth if necessary.

12 1.A 2.B 3.C 4.D Five Minute Check 1 A.7,303.2 square miles B.94,246.2 square miles C.79,639.8 square miles D.36,743.8 square miles Use the solve a simpler problem strategy. Minnesota is known as the "Land of 10,000 Lakes." The total area of Minnesota is 86,943 square miles. Of that, about 8.4% of the area is water. About how many square miles of Minnesota's area is not covered by water? Round your answer to the nearest tenth. (over Lesson 7-2)

13 1.A 2.B 3.C 4.D Five Minute Check 2 A.8 packages of 4; 7 packages of 7 B.4 packages of 4; 14 packages of 7 C.5 packages of 4; 8 packages of 7 D.11 packages of 4; 6 packages of 7 Use the solve a simpler problem strategy. Natasha is giving each of her 27 classmates 3 pieces of chocolate as a treat for her birthday. If the chocolates are sold in packages of 4 and 7, how many of each size package should she buy? (over Lesson 7-2)

14 1.A 2.B 3.C 4.D Five Minute Check 3 A.845 customers B.455 customers C.90 customers D.65 customers Use the solve a simpler problem strategy. 650 customers of a restaurant were surveyed. If 30% of the customers voted for a new dessert to be added to the menu, find the number of customers who voted against adding the new dessert to the menu. (over Lesson 7-2)

15 1.A 2.B 3.C 4.D Five Minute Check 4 A.3.5 mm B.2.33 mm C.1.75 mm D.1.50 mm Use the solve a simpler problem strategy. The length of a $10 roll of a tightly wrapped roll of quarters is 70 mm. About how thick is one quarter? (over Lesson 7-2)

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