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ACTIVITY 2

EVALUATION 1

1.

[image]

The diagram shows a circle with center O and radius 42 cm.
A and B are points on the circumference such that arc AB makes an angle of 120°.

Calculate the length of the arc AB.

Use 22/7 as an approximation for π

EVALUATION 2

2.

[image]
The diagram shows a circle with center O and radius 42 inches.

A and B are points on the circumference such that arc AB makes an angle of 120° at O

Calculate the area of the sector AOB.

Use 22/7 as an approximation for π

QUESTION 3

[image]
The diagram shows a circle with center O and radius 10 cm. A and B are points on the circumference such that arc AB makes an angle of 150° at O

Calculate the area of the shaded segment.

Give your answer to the nearest cm2

QUESTION 4

4. [image]
The diagram shows a circle with center O and radius 5 cm.
A and B are points on the circumference such that arc AB makes an angle of 3 radians at O.

Calculate the length of the arc AB.

EVALUATION 5

5. [image]
The diagram shows a circle with center O and radius 5 cm.
A and B are points on the circumference such that arc AB makes an angle of 3 radians at O.

Calculate the area of the sector AOB.

EVALUATION 6

6. A piece of metal has a shape made of a square and a semicircle:
[image]
What is the perimeter of the shape?

Use (22/7) as an approximation for π

EVALUATION 7

This is a shape made up of four quarter-circular arcs, each of radius 5 inches, joined together:
[image]

What is the area of the shape?

Use 3.14 as an approximation for π