O que é Área?

🎯 What Will We Learn Today?

How much space does a shape cover? That's area! Today we'll learn what area means and how to calculate it for rectangles and squares.

📚 What Is Area?

Area is the amount of flat space inside a shape. It tells us how much surface a shape covers. We measure area in square units — like square centimeters (cm²) or square inches (in²).

Think of tiling a floor — the number of tiles you need depends on the area!

📐 Area Formulas

Rectangle

Area = Length × Width → A = L × W

Square

Since length = width for a square: A = side × side = s²

🎮 Let's Calculate!

Example 1: A rectangle is 7 cm long and 4 cm wide.

A = 7 × 4 = 28 square cm (28 cm²)

Example 2: A square has sides of 9 inches.

A = 9 × 9 = 81 square inches (81 in²)

Example 3: A room is 12 feet long and 10 feet wide. How much carpet do you need?

A = 12 × 10 = 120 square feet of carpet!

🔍 Perimeter vs. Area

Don't confuse them!

| | Perimeter | Area |
|---|-----------|------|
| What? | Distance around | Space inside |
| Units | Regular (cm, in) | Square (cm², in²) |
| Formula (rect) | 2L + 2W | L × W |

📝 Practice Problems

Find the area of a rectangle 8 cm by 3 cm.

A square has side length 6 in. What is its area?

A garden is 15 m by 4 m. What is its area? Its perimeter?

Which has more area: a 5×5 square or a 6×4 rectangle?

🎮 Play a Game!

Practice area and more with Demolition Division — knock down buildings by solving math problems!