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Question (11)

QN0026616

Which formula gives the area of a triangle?

(A) bh
(B) 2bh
(C) 1/2 bh
(D) b + h

Correct Answer: C

Explanation:

Area of triangle = 1/2 × base × height.

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Question (12)

QN0026617

The area of a circle with diameter 28 cm is:

(A) 308 cm²
(B) 616 cm²
(C) 1232 cm²
(D) 2464 cm²

Correct Answer: B

Explanation:

Radius = 14 cm. Area = 616 cm².

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Question (13)

QN0026618

A rectangular field is 25 m long and 16 m broad. Its area is:

(A) 200 m²
(B) 300 m²
(C) 400 m²
(D) 500 m²

Correct Answer: C

Explanation:

Area = 25 × 16 = 400 m².

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Question (14)

QN0026619

The ratio of circumference to diameter of every circle is:

(A) 1
(B) 2
(C) π
(D) 22/7 only

Correct Answer: C

Explanation:

Circumference ÷ diameter = π.

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Question (15)

QN0026620

A parallelogram and a rectangle have the same base and height. Their areas are:

(A) Equal
(B) Double
(C) Half
(D) Cannot be compared

Correct Answer: A

Explanation:

Both areas equal base × height.

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Question (16)

QN0026621

The arc length of a semicircle of radius 14 cm is:

(A) 22 cm
(B) 44 cm
(C) 66 cm
(D) 88 cm

Correct Answer: B

Explanation:

Arc length of semicircle = πr = 44 cm.

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Question (17)

QN0026622

A square has area 225 cm². Its perimeter is:

(A) 45 cm
(B) 50 cm
(C) 60 cm
(D) 75 cm

Correct Answer: C

Explanation:

Side = 15 cm, perimeter = 60 cm.

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Question (18)

QN0026623

The area enclosed by the boundary of a circle is measured in:

(A) Linear units
(B) Square units
(C) Cubic units
(D) Degrees

Correct Answer: B

Explanation:

Area is always measured in square units.

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Question (19)

QN0026624

A triangle has area 84 cm² and base 14 cm. Its height is:

(A) 6 cm
(B) 8 cm
(C) 10 cm
(D) 12 cm

Correct Answer: D

Explanation:

84 = 1/2 × 14 × h ⇒ h = 12 cm.

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Question (20)

QN0026625

A wheel of diameter 70 cm rotates through 180°. The distance travelled by a point on the rim is:

(A) 55 cm
(B) 110 cm
(C) 220 cm
(D) 440 cm

Correct Answer: B

Explanation:

Distance = half of circumference = 110 cm.

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Question (11)

Which formula gives the area of a triangle?

Explanation:

Link:

Question (12)

The area of a circle with diameter 28 cm is:

Explanation:

Link:

Question (13)

A rectangular field is 25 m long and 16 m broad. Its area is:

Explanation:

Link:

Question (14)

The ratio of circumference to diameter of every circle is:

Explanation:

Link:

Question (15)

A parallelogram and a rectangle have the same base and height. Their areas are:

Explanation:

Link:

Question (16)

The arc length of a semicircle of radius 14 cm is:

Explanation:

Link:

Question (17)

A square has area 225 cm². Its perimeter is:

Explanation:

Link:

Question (18)

The area enclosed by the boundary of a circle is measured in:

Explanation:

Link:

Question (19)

A triangle has area 84 cm² and base 14 cm. Its height is:

Explanation:

Link:

Question (20)

A wheel of diameter 70 cm rotates through 180°. The distance travelled by a point on the rim is:

Explanation:

Link:

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