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Area of Plane Figures II - JSS3 Mathematics Past Questions and Answers - page 1

1

What is the formula for the area of a sector of a circle?

A

𝜃360∘×𝜋𝑟^2

B

360∘𝜃×𝜋𝑟^2

C

𝜃×𝜋𝑟^2

D

𝜋𝑟𝜃

correct option: a
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2

A circle has a radius of 6 meters. What is the area of the circle?

A

12𝜋 square meters

B

18𝜋 square meters

C

36𝜋 square meters

D

72𝜋 square meters

correct option: c
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3

If the radius of a circle is doubled, how does the area change?

A

Increases by a factor of 2

B

Increases by a factor of 4

C

Decreases by a factor of 2

D

Stays the same

correct option: b
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4

What is the area of a rectangle with length 10 meters and width 4 meters?

A

14 square meters

B

36 square meters

C

40 square meters

D

44 square meters

correct option: c
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5

How many square tiles of 2 meters by 2 meters are needed to cover a square area of 16 square meters?

A

2 tiles

B

4 tiles

C

6 tiles

D

8 tiles

correct option: b
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6

The central angle of a sector is 45∘, and the radius is 8 meters. What is the area of the sector?

A

4𝜋 square meters

B

8𝜋 square meters

C

16𝜋 square meters

D

32𝜋 square meters

correct option: a
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7

What is the area of a triangle with base 6 meters and height 8 meters?

A

24 square meters

B

26 square meters

C

32 square meters

D

48 square meters

correct option: a
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8

A circular garden has a diameter of 14 meters. What is its area in square meters?

A

28𝜋

B

49𝜋

C

98𝜋

D

196𝜋

correct option: c
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9

The area of a square field is 121 square meters. What is the length of one side of the field?

A

9 meters

B

11 meters

C

12 meters

D

13 meters

correct option: b
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10

Find the area of a circle with radius 5 meters.

Area=𝜋×(5 m)^2

Area=𝜋×25

Area=25𝜋

Area≈78.54 square meters

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