WorksheetsCircles (7.9B, 7.9C, 7.5B)
Total questions: 16
Worksheet time: 18mins
Which formula represents the circumference of a circle?
C=πd
C=2πr
Both A and B
C=πr2
If the radius of a circle is 5 cm, what is its diameter?
8 cm
10 cm
3 cm
15 cm
What is the relationship between the radius and diameter of a circle?
The radius of a circle is equal to its diameter.
The diameter of a circle is half the length of its radius.
The diameter of a circle is twice the length of its radius.
The radius of a circle is always greater than its diameter.
The area of a circle can be found using which formula?
A=πd2
A=2πr
A=πr2
A=21πr2
If the diameter of a circle is 12 cm, what is its radius?
4 cm
8 cm
6 cm
10 cm
What is the value of pi (π)?
4.6692
3.33333
3.14159
2.71828
What is the total percent shown in a full circle like the one shown?
40%
100%
270%
180%
What is the radius?
(a)
radius = 6 cm
What is the area of a circle with a radius of 7 cm?
153.86 cm2
43.96 cm2
154.84 cm2
46.48 cm2
A cruise ship has a large, circular window. It has a diameter of 8 meters. What is the window's area?
31.25 m2
29.55 m2
30.36 m2
50.27 m2
If the circumference of a circle is 36π cm, what is its radius?
24 cm
12 cm
18 cm
30 cm
The stained glass window is a semicircle. What is the distance around the window?
40.82 inches
66.82 inches
81.64 inches
107.64 inches
Find the area of the following circle:
4π ft2
16π ft2
2π ft2
8π ft2
Phoenix is painting a semi-circular fence at the edge of their garden. If the semi-circle has a radius of 9 inches, what is the area Phoenix needs to paint?
254.34 squared inches
127.17 squared inches
324 inches
