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Question (21)

QN009718

If the area of a rectangle is fixed, increasing its length will:

(A) Increase breadth
(B) Decrease breadth
(C) Double breadth
(D) Keep breadth unchanged

Correct Answer: B

Explanation:

For fixed area, breadth decreases if length increases.

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Question (22)

QN009719

A notebook cover is rectangular with dimensions 24 cm × 18 cm. Its area is:

(A) 42 cm²
(B) 216 cm²
(C) 324 cm²
(D) 432 cm²

Correct Answer: D

Explanation:

Area = 24 × 18 = 432 cm².

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Question (23)

QN009720

The area of a rectangle of length 13 cm and breadth 9 cm is:

(A) 22 cm²
(B) 44 cm²
(C) 117 cm²
(D) 234 cm²

Correct Answer: C

Explanation:

Area = 13 × 9 = 117 cm².

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Question (24)

QN009721

Which unit is unsuitable for measuring area?

(A) cm²
(B) m²
(C) km²
(D) cm

Correct Answer: D

Explanation:

cm is a linear unit, not a square unit.

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Question (25)

QN009722

A rectangle has length 20 cm and breadth 15 cm. Area is:

(A) 35 cm²
(B) 70 cm²
(C) 300 cm²
(D) 600 cm²

Correct Answer: C

Explanation:

Area = 20 × 15 = 300 cm².

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Question (26)

QN009723

If the dimensions of a rectangle are each multiplied by 3, the area becomes:

(A) 3 times
(B) 6 times
(C) 9 times
(D) 12 times

Correct Answer: C

Explanation:

Area changes by the square of scale factor.

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Question (27)

QN009724

A rectangular carpet covers 72 m². If its breadth is 8 m, its length is:

(A) 7 m
(B) 8 m
(C) 9 m
(D) 10 m

Correct Answer: C

Explanation:

Length = 72 ÷ 8 = 9 m.

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Question (28)

QN009725

The area of a rectangle is numerically equal to its perimeter. If length = 6 cm and breadth = 3 cm, then:

(A) Area > perimeter
(B) Area < perimeter
(C) Area = perimeter
(D) Cannot be compared

Correct Answer: C

Explanation:

Area = 18 and perimeter = 18.

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Question (29)

QN009726

A rectangle has dimensions 16 cm × 12 cm. Area of the rectangle is:

(A) 28 cm²
(B) 96 cm²
(C) 192 cm²
(D) 384 cm²

Correct Answer: C

Explanation:

Area = 16 × 12 = 192 cm².

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Question (30)

QN009727

Which real-life situation uses the concept of area of rectangle?

(A) Measuring boundary fencing
(B) Painting a rectangular wall
(C) Measuring rope length
(D) Counting corners

Correct Answer: B

Explanation:

Area helps in calculating surface to be painted.

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Question (21)

If the area of a rectangle is fixed, increasing its length will:

Explanation:

Link:

Question (22)

A notebook cover is rectangular with dimensions 24 cm × 18 cm. Its area is:

Explanation:

Link:

Question (23)

The area of a rectangle of length 13 cm and breadth 9 cm is:

Explanation:

Link:

Question (24)

Which unit is unsuitable for measuring area?

Explanation:

Link:

Question (25)

A rectangle has length 20 cm and breadth 15 cm. Area is:

Explanation:

Link:

Question (26)

If the dimensions of a rectangle are each multiplied by 3, the area becomes:

Explanation:

Link:

Question (27)

A rectangular carpet covers 72 m². If its breadth is 8 m, its length is:

Explanation:

Link:

Question (28)

The area of a rectangle is numerically equal to its perimeter. If length = 6 cm and breadth = 3 cm, then:

Explanation:

Link:

Question (29)

A rectangle has dimensions 16 cm × 12 cm. Area of the rectangle is:

Explanation:

Link:

Question (30)

Which real-life situation uses the concept of area of rectangle?

Explanation:

Link:

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