Chapter 14: Perimeter and Area — Online MCQ Test

MATHS · Samacheer Kalvi 6th · Tamil Nadu State Board
Practice Chapter 14: Perimeter and Area with a free chapter-wise online MCQ test. This chapter covers: Area formulas, Perimeter formulas, Rectangle, Square, Right-angled triangle. AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter 14: Perimeter and Area — Important Questions & Answers

What is the formula for the perimeter of a rectangle with length l and breadth b?

A. 2(l + b)
B. l × b
C. l + b
D. 2l + b

Answer: A. 2(l + b)
The perimeter of a rectangle is the sum of all four sides, which equals 2(l + b).

What is the formula for the area of a square with side s?

A. 4s
B. s²
C. 2s
D. s

Answer: B. s²
The area of a square is calculated by multiplying side × side, which is s².

What is the perimeter of a rectangle with length 12 cm and breadth 8 cm?

A. 20 cm
B. 40 cm
C. 96 cm
D. 56 cm

Answer: B. 40 cm
Perimeter = 2(l + b) = 2(12 + 8) = 2(20) = 40 cm.

Two rectangles have the same perimeter but different dimensions. What can we conclude about their areas?

A. Their areas must be equal
B. Their areas can be different
C. Their areas must be different
D. Cannot determine relationship

Answer: B. Their areas can be different
Two rectangles can have the same perimeter but different areas. For example, a 6×4 rectangle and 7×3 rectangle both have perimeter 20 but areas 24 and 21 respectively.

If the side of a square is increased by 2 cm, the area increases by 28 cm². What was the original side length?

A. 3 cm
B. 6 cm
C. 5 cm
D. 4 cm

Answer: B. 6 cm
Let original side = s. New area - Original area = 28. (s+2)² - s² = 28. s² + 4s + 4 - s² = 28. 4s + 4 = 28. s = 6 cm.