Free Printable Area: Circles and Such

Worksheets

Area: Circles and Such

Total questions: 15

Worksheet time: 45mins

Name

Class

Date

A DVD has a diameter of 15 millimeters. Which equation would help you determine the circumference?

$C=\ 15\pi$

$C=\ 2\pi\cdot15$

$C\ =\ \frac{15}{\pi}$

Is the red line a radius or diameter of the circle?

Radius

Diameter

What is circumference?

The distance around a circle.

The space inside the circle.

A line from side to side passing through the center.

A line from the center to the side.

What is the area of a circle?

The distance around a circle.

The space inside the circle.

A line from side to side passing through the center.

A line from the center to the side.

Circumferences are to circles as _____________________________ are to polygons.

Area

Volume

Perimeter

Surface Area

What region of a circle is defined as the region bounded by two radii and their intercepted arc.

sector

segment

arc

angle

Which of the following equations cannot be used to find the circumference of a circle?

C=πd

C=2πr

C=πr²

C=dπ

What is the Area of a Sector with radius r and an angle $\theta=45$ ?

$\frac{1}{2}\pi r^2$

$\frac{1}{8}\pi r^2$

$4\pi r^2$

$2\pi r^{ }$

In a regular polygon, the line from the center to an outer vertex is a(n)

Apothem

Central Angle

Radius

Regular Polygon

10.

In a regular polygon the line from the center to the mid-point of an outer side is a(n)

Radius

Central Angle

Sine

Apothem

11.

What is the formula for area of a regular polygon.

½⋅apothem⋅perimeter

a²+ b² = c²

πr²

√x²+y²

12.

The bases are the same length. The height of one parallelogram is twice the height of the other. What is the ratio of the areas of these parallelograms?

1/2

2/1

1/4

1/3

13.

The height and lengths of the bases of one trapezoid are all twice those of the other trapezoid. Find the ratio of the areas.

4/1

1/4

1/2

2/1

14.

The scale factor of two similar figures is 4 : 5. What is the ratio of their perimeters?

4 : 5

16 : 25

64 : 125

8 : 10

15.

Find the missing perimeter.

100 %

Area: Circles and Such

Total questions: 15

Worksheet time: 45mins

Similar Resources on Wayground