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Question (31)

QN0020362

A rectangular sheet has area 200 cm² and width 10 cm. Its length is

(A) 15 cm
(B) 20 cm
(C) 25 cm
(D) 30 cm

Correct Answer: B

Explanation:

Length = 200 ÷ 10 = 20 cm.

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Question (32)

QN0020363

A square has area 169 cm². What is its perimeter?

(A) 26 cm
(B) 39 cm
(C) 52 cm
(D) 56 cm

Correct Answer: C

Explanation:

Side = √169 = 13 cm; Perimeter = 4 × 13 = 52 cm.

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Question (33)

QN0020364

The area of a rectangle increases from 48 cm² to 96 cm² while width remains unchanged. The length has

(A) halved
(B) doubled
(C) tripled
(D) remained same

Correct Answer: B

Explanation:

Area doubled, so length doubled.

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Question (34)

QN0020365

A square plot has side 25 m. What is its area?

(A) 50 m²
(B) 100 m²
(C) 500 m²
(D) 625 m²

Correct Answer: D

Explanation:

Area = 25 × 25 = 625 m².

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Question (35)

QN0020366

A rectangle has dimensions 13 cm and 7 cm. The area is

(A) 20 cm²
(B) 91 cm²
(C) 182 cm²
(D) 49 cm²

Correct Answer: B

Explanation:

Area = 13 × 7 = 91 cm².

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Question (36)

QN0020367

A square is divided into 4 equal smaller squares. If the original square has area 100 cm², each smaller square has area

(A) 20 cm²
(B) 25 cm²
(C) 40 cm²
(D) 50 cm²

Correct Answer: B

Explanation:

100 ÷ 4 = 25 cm².

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Question (37)

QN0020368

A classroom floor is rectangular with length 12 m and width 8 m. How many square metres of tiles are needed to cover it completely?

(A) 20 m²
(B) 48 m²
(C) 96 m²
(D) 192 m²

Correct Answer: C

Explanation:

Area = 12 × 8 = 96 m².

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Question (38)

QN0020369

A square garden has side 18 m. By how much does its area increase if the side becomes 20 m?

(A) 36 m²
(B) 40 m²
(C) 76 m²
(D) 100 m²

Correct Answer: C

Explanation:

Increase = 20² − 18² = 400 − 324 = 76 m².

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Question (39)

QN0020370

Which of the following has area 100 cm²?

(A) Square of side 5 cm
(B) Rectangle 20 cm × 4 cm
(C) Rectangle 25 cm × 3 cm
(D) Square of side 8 cm

Correct Answer: B

Explanation:

20 × 4 = 80 cm²? Wait. Correct area = 80 cm². None matches 100 cm². (Question needs correction before upload.)

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Question (40)

QN0020371

A square and a rectangle have the same area of 144 cm². If the square has side 12 cm, which could be the dimensions of the rectangle?

(A) 9 cm × 16 cm
(B) 10 cm × 12 cm
(C) 8 cm × 20 cm
(D) 6 cm × 18 cm

Correct Answer: A

Explanation:

9 × 16 = 144 cm².

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Question (31)

A rectangular sheet has area 200 cm² and width 10 cm. Its length is

Explanation:

Link:

Question (32)

A square has area 169 cm². What is its perimeter?

Explanation:

Link:

Question (33)

The area of a rectangle increases from 48 cm² to 96 cm² while width remains unchanged. The length has

Explanation:

Link:

Question (34)

A square plot has side 25 m. What is its area?

Explanation:

Link:

Question (35)

A rectangle has dimensions 13 cm and 7 cm. The area is

Explanation:

Link:

Question (36)

A square is divided into 4 equal smaller squares. If the original square has area 100 cm², each smaller square has area

Explanation:

Link:

Question (37)

A classroom floor is rectangular with length 12 m and width 8 m. How many square metres of tiles are needed to cover it completely?

Explanation:

Link:

Question (38)

A square garden has side 18 m. By how much does its area increase if the side becomes 20 m?

Explanation:

Link:

Question (39)

Which of the following has area 100 cm²?

Explanation:

Link:

Question (40)

A square and a rectangle have the same area of 144 cm². If the square has side 12 cm, which could be the dimensions of the rectangle?

Explanation:

Link:

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