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Perimeter is the total length around a shape — like a fence round a park. For a rectangle it is 2 × (length + width); for a square, 4 × side. Area is how many unit squares fit inside: length × width for a rectangle, side × side for a square.
✓ You passed this lesson’s test.
Around or inside — “perimeter is the distance around; area is the number of squares inside”
Use it for: Fencing a garden, framing a photo, tiling a floor, and the perimeter and area chapter of Class 4 maths.
Check: Go all the way round: 12 + 7 + 12 + 7 = 38 ✓
▶ Watch it animatedWork it out in your head or on paper, type the answer and press Check. Stuck? Press “Show me how”.
Right: 0 · Tried: 0
20 sums. Check each answer, then go to the next one. Get 16 or more right to pass.
🏅 Sign in with Google to earn the 🧱 Fence Builder badge when you pass — and a certificate when you finish all 8 lessons of Part 4 · Class 4. You can still take the test without signing in.
Why does it work? When should you use it? Ask in English, मराठी or हिंदी.
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