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Question (21)

QN009798

If the area of a triangle is fixed, increasing its base will:

(A) Increase height
(B) Decrease height
(C) Double height
(D) Keep height same

Correct Answer: B

Explanation:

For fixed area, height decreases if base increases.

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Question (22)

QN009799

A triangular field has base 30 m and height 14 m. Its area is:

(A) 210 m²
(B) 420 m²
(C) 180 m²
(D) 840 m²

Correct Answer: A

Explanation:

Area = ½ × 30 × 14 = 210 m².

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Question (23)

QN009800

Which of the following can represent area?

(A) 24 cm
(B) 36 cm²
(C) 15 m
(D) 20 cm

Correct Answer: B

Explanation:

Area is measured in square units.

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Question (24)

QN009801

The area of a triangle is 132 cm². If its height is 11 cm, the base is:

(A) 12 cm
(B) 18 cm
(C) 24 cm
(D) 30 cm

Correct Answer: C

Explanation:

Base = (2 × 132) ÷ 11 = 24 cm.

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Question (25)

QN009802

A triangle has base 32 cm and height 15 cm. Area is:

(A) 240 cm²
(B) 480 cm²
(C) 120 cm²
(D) 960 cm²

Correct Answer: A

Explanation:

Area = ½ × 32 × 15 = 240 cm².

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Question (26)

QN009803

If the base of a triangle becomes three times and height remains same, the area becomes:

(A) One-third
(B) Double
(C) Triple
(D) Four times

Correct Answer: C

Explanation:

Area is directly proportional to the base.

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Question (27)

QN009804

A triangular carpet covers 108 m². If its base is 18 m, its height is:

(A) 10 m
(B) 12 m
(C) 14 m
(D) 16 m

Correct Answer: B

Explanation:

Height = (2 × 108) ÷ 18 = 12 m.

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Question (28)

QN009805

A rectangle and a triangle have the same base and height. The area of the rectangle is:

(A) Half the triangle
(B) Equal to triangle
(C) Double the triangle
(D) Four times the triangle

Correct Answer: C

Explanation:

Area of rectangle = 2 × area of triangle.

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Question (29)

QN009806

The area of a triangle with dimensions 16 cm base and 11 cm height is:

(A) 88 cm²
(B) 176 cm²
(C) 44 cm²
(D) 352 cm²

Correct Answer: A

Explanation:

Area = ½ × 16 × 11 = 88 cm².

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Question (30)

QN009807

Which real-life activity uses the concept of area of a triangle?

(A) Measuring boundary wire
(B) Designing triangular road signs
(C) Counting corners
(D) Measuring rope length

Correct Answer: B

Explanation:

Triangular road signs use the concept of triangular area.

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Question (21)

If the area of a triangle is fixed, increasing its base will:

Explanation:

Link:

Question (22)

A triangular field has base 30 m and height 14 m. Its area is:

Explanation:

Link:

Question (23)

Which of the following can represent area?

Explanation:

Link:

Question (24)

The area of a triangle is 132 cm². If its height is 11 cm, the base is:

Explanation:

Link:

Question (25)

A triangle has base 32 cm and height 15 cm. Area is:

Explanation:

Link:

Question (26)

If the base of a triangle becomes three times and height remains same, the area becomes:

Explanation:

Link:

Question (27)

A triangular carpet covers 108 m². If its base is 18 m, its height is:

Explanation:

Link:

Question (28)

A rectangle and a triangle have the same base and height. The area of the rectangle is:

Explanation:

Link:

Question (29)

The area of a triangle with dimensions 16 cm base and 11 cm height is:

Explanation:

Link:

Question (30)

Which real-life activity uses the concept of area of a triangle?

Explanation:

Link:

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