Area of squares and rectangles

Key Notes :

🟩 Area of Squares and Rectangles 📐

1️⃣ What is Area?

• Area is the space inside a shape.
• Measured in square units (like cm², m², etc.)
• Example: 🟫 A square with side 4 cm → area = 16 cm²

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2️⃣ Rectangle 🟦

• Definition: A rectangle has opposite sides equal and all angles 90°.
• Formula for Area:

Area=Length × Breadth (A=l×b)\text{Area} = \text{Length × Breadth} \, (A = l \times b)Area=Length × Breadth(A=l×b)

• Example: 📏 Length = 8 cm, Breadth = 5 cm

Area=8×5=40 cm²\text{Area} = 8 \times 5 = 40 \, \text{cm²}Area=8×5=40cm²

💡 Tip: Count how many 1×1 squares fit inside the rectangle.

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3️⃣ Square 🟩

• Definition: A square has all sides equal and all angles 90°.
• Formula for Area:

Area=Side × Side (A=s×s)\text{Area} = \text{Side × Side} \, (A = s \times s)Area=Side × Side(A=s×s)

• Example: 📏 Side = 6 cm

Area=6×6=36 cm²\text{Area} = 6 \times 6 = 36 \, \text{cm²}Area=6×6=36cm²

💡 Tip: A square is a special rectangle where length = breadth.

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4️⃣ Quick Comparison

Shape	Formula	Example
Rectangle 🟦	l×bl \times bl×b	8 × 5 = 40 cm²
Square 🟩	s×ss \times ss×s	6 × 6 = 36 cm²

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5️⃣ Fun Fact 🎉

• If you double the sides of a square, the area becomes 4 times bigger!
• Example: Side 2 cm → 4 cm → Area = 4² = 16 cm² → New area = 16² = 256 cm²

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6️⃣ Remember 🔑

• Units always squared: cm², m², etc.
• Formula: Rectangle → Length × Breadth
• Formula: Square → Side × Side

Learn with an example

Let’s practice!🖊️