Perimeter and Area
ICSE · Class 4 · Mathematics
Flashcards for Perimeter and Area — ICSE Class 4 Mathematics. Quick Q&A cards covering key concepts, definitions, and formulas.
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Find the perimeter of a square with side 5 cm.
Answer
Step 1: Use the formula — Perimeter = 4 × side. Step 2: Substitute the value — 4 × 5 cm = 20 cm. Answer: 20 cm.
Find the perimeter of a rectangle with length 8 cm and breadth 3 cm.
Answer
Step 1: Use the formula — Perimeter = 2 × (length + breadth). Step 2: Add length and breadth — 8 cm + 3 cm = 11 cm. Step 3: Multiply by 2 — 2 × 11 cm = 22 cm. Answer: 22 cm.
A triangle has sides 4 cm, 5 cm, and 6 cm. What is its perimeter?
Answer
Step 1: Add all three sides — 4 cm + 5 cm + 6 cm. Step 2: 4 + 5 = 9 cm, 9 + 6 = 15 cm. Answer: 15 cm.
A square garden has a side of 10 m. How much fencing is needed to enclose it?
Answer
Step 1: Fencing needed = Perimeter of the square. Step 2: Perimeter = 4 × side = 4 × 10 m = 40 m. Answer: 40 meters of fencing.
A rectangular field is 15 m long and 9 m wide. Find the perimeter.
Answer
Step 1: Use formula — Perimeter = 2 × (length + breadth). Step 2: 15 m + 9 m = 24 m. Step 3: 2 × 24 m = 48 m. Answer: 48 m.
An equilateral triangle has each side 7 cm. Find its perimeter.
Answer
Step 1: All sides are equal. Step 2: Perimeter = 7 cm + 7 cm + 7 cm = 21 cm. Or, 3 × 7 cm = 21 cm. Answer: 21 cm.
A rectangular photo frame is 30 cm long and 20 cm wide. What is the total length of the frame?
Answer
Step 1: Total length of frame = Perimeter of rectangle. Step 2: Perimeter = 2 × (30 cm + 20 cm) = 2 × 50 cm = 100 cm. Answer: 100 cm.
A square tile has a side of 20 cm. What is its perimeter?
Answer
Step 1: Perimeter = 4 × side = 4 × 20 cm = 80 cm. Answer: 80 cm.
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