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Question (21)

QN009688

A square and a rectangle both have area 36 cm². Which statement is correct?

(A) Their perimeters must be equal
(B) Their perimeters may differ
(C) Rectangle always has smaller perimeter
(D) Square always has larger perimeter

Correct Answer: B

Explanation:

Equal areas do not guarantee equal perimeters.

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Question (22)

QN009689

The perimeter of a regular pentagon with side 9 cm is:

(A) 18 cm
(B) 36 cm
(C) 45 cm
(D) 54 cm

Correct Answer: C

Explanation:

Perimeter = 5 × 9 = 45 cm.

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Question (23)

QN009690

A rope 60 m long is used to make a square enclosure. The side of the enclosure is:

(A) 10 m
(B) 12 m
(C) 15 m
(D) 20 m

Correct Answer: C

Explanation:

Side = 60 ÷ 4 = 15 m.

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Question (24)

QN009691

If the side of a square is increased by 5 cm, the perimeter increases by:

(A) 5 cm
(B) 10 cm
(C) 15 cm
(D) 20 cm

Correct Answer: D

Explanation:

Increase in perimeter = 4 × 5 = 20 cm.

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Question (25)

QN009692

Which statement explains a perimeter paradox?

(A) Increasing area always increases perimeter
(B) Shapes with different appearances may have equal perimeters
(C) Equal sides always mean equal area
(D) Perimeter cannot be measured

Correct Answer: B

Explanation:

Different shapes can sometimes have equal perimeters.

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Question (26)

QN009693

A rectangle has sides 9 cm and 6 cm. Another rectangle has sides 10 cm and 5 cm. Their perimeters are:

(A) Equal
(B) Different
(C) Zero
(D) Impossible to compare

Correct Answer: A

Explanation:

Both have perimeter = 30 cm.

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Question (27)

QN009694

A square tile has side 8 cm. Perimeter of four such tiles arranged in a straight row is:

(A) 32 cm
(B) 48 cm
(C) 64 cm
(D) 128 cm

Correct Answer: B

Explanation:

Total outer perimeter = 48 cm.

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Question (28)

QN009695

A rectangular path has outer dimensions 20 m × 15 m. Its outer boundary length is:

(A) 35 m
(B) 70 m
(C) 300 m
(D) 150 m

Correct Answer: B

Explanation:

Perimeter = 2(20 + 15) = 70 m.

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Question (29)

QN009696

If all sides of a polygon are doubled, its perimeter becomes:

(A) Half
(B) Same
(C) Double
(D) Four times

Correct Answer: C

Explanation:

Perimeter changes in the same ratio as side lengths.

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Question (30)

QN009697

A triangle has sides 5 cm, 7 cm, and 9 cm. Its perimeter is:

(A) 16 cm
(B) 18 cm
(C) 21 cm
(D) 24 cm

Correct Answer: C

Explanation:

Perimeter = 5 + 7 + 9 = 21 cm.

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Question (21)

A square and a rectangle both have area 36 cm². Which statement is correct?

Explanation:

Link:

Question (22)

The perimeter of a regular pentagon with side 9 cm is:

Explanation:

Link:

Question (23)

A rope 60 m long is used to make a square enclosure. The side of the enclosure is:

Explanation:

Link:

Question (24)

If the side of a square is increased by 5 cm, the perimeter increases by:

Explanation:

Link:

Question (25)

Which statement explains a perimeter paradox?

Explanation:

Link:

Question (26)

A rectangle has sides 9 cm and 6 cm. Another rectangle has sides 10 cm and 5 cm. Their perimeters are:

Explanation:

Link:

Question (27)

A square tile has side 8 cm. Perimeter of four such tiles arranged in a straight row is:

Explanation:

Link:

Question (28)

A rectangular path has outer dimensions 20 m × 15 m. Its outer boundary length is:

Explanation:

Link:

Question (29)

If all sides of a polygon are doubled, its perimeter becomes:

Explanation:

Link:

Question (30)

A triangle has sides 5 cm, 7 cm, and 9 cm. Its perimeter is:

Explanation:

Link:

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