C Multi-Part Lesson 8-3 PART Area of Composite Shapes A B Main Idea I will find the area of composite shapes. New Vocabulary composite shape Find Areas of Composite Shapes A composite shape is made up of two or more shapes. To find the area of a composite shape, break it into smaller parts. POOLS Drew is staying at a hotel that has the swimming pool shown. Drew wants to know the area of the pool. Find the area of the swimming pool at Drew’s hotel. Step 1 Break up the figure into smaller parts. Look for rectangles and squares. Step 2 Find the area of each part. Step 3 Add the areas. The area is 72 + 100 or 172 square meters. 398 Chapter 8 Find Area Square A = side × side A = s × s A = 10 m × 10 m A =100 sq m Rectangle A = length (base) × width (height) A = × w A = 12 m × 6 m A = 72 sq m
4
Embed
PART B Main Idea Find Areas of Composite Shapes · PDF fileFind Areas of Composite Shapes A composite shape is made up of two or more shapes. To find the area of a composite shape,
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
C
Multi-Part Lesson
8-3PART
Area of Composite Shapes
A B
Main IdeaI will find the area of composite shapes.
New Vocabulary composite shape
Find Areas of Composite ShapesA composite shape is made up of two or more shapes. To find the area of a composite shape, break it into smaller parts.
POOLS Drew is staying at a hotel that has the swimming pool shown. Drew wants to know the area of the pool. Find the area of the swimming pool at Drew’s hotel.
Step 1 Break up the figure into smaller parts. Look for rectangles and squares.
Step 2 Find the area of each part.
Step 3 Add the areas.
The area is 72 + 100 or 172 square meters.
398 Chapter 8 Find Area
SquareA = side × sideA = s × sA = 10 m × 10 mA = 100 sq m
RectangleA = length (base) × width (height)A = � × wA = 12 m × 6 m
The builders of Fort Jefferson at Dry Tortugas National Park in Florida began in 1846. It was supposed to house large cannons, but was never completed.
14. Draw a picture to show how you could decompose a hexagon to find the area of Fort Jefferson.
15. Trace a hexagon pattern block on a centimeter grid paper. Count the squares to estimate the area.
16. OPEN ENDED Draw and label two composite shapes that have the same area but have different perimeters.
17. CHALLENGE Find the area of the shaded shape in units.
18. Create a word problem about a real-world situation involving perimeter and area of a composite shape.
Choose the better estimate. (Lesson 8-2E)
21. doormat 22. dining room table 23. bathroom tile6 square inches or 2 square feet or 16 square inches or 6 square feet 2 square yards 16 square yards
24. Pia plays 32 minutes each soccer game and has 15 games during the season. Her older sister plays 28 minutes each soccer game and has 18 games in her season. How many more minutes does Pia’s sister play than Pia? (Lesson 8-2D)
Lesson 8-3 Area of Composite Shapes 401
19. Which equation below represents the area (A) of the square in square inches?