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

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KC

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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.

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Example 1 Find the Area of a Composite Figure Answer: The area of the figure is about 14.1 + 14.1 + 72 or 100.2 square centimeters. Area of one semicircleArea of rectangle

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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.

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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.

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Example 2 Answer: The area of the garden is 35 + 5 + 5 or 45 square feet. Area of rectangleArea of one triangle

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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?

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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.

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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 = 8 + 8 or 16, w = 6 + 6 or 12 A=192Simplify.A=48Simplify.

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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.

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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)

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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)

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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)

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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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