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WorksheetsUnit 3 (7th Grade- Open Up)
Total questions: 7
Worksheet time: 24mins
Name
Class
Date
1.
find the area of the circle with radius 3 cm below.
a)
100 cm2
b)
225 cm2
c)
9 cm2
d)
28.26 cm2
2.
What is the radius of this circle?
a)
18
b)
10
c)
9
d)
8
3.
What is the diameter?
a)
5 in
b)
10 in
c)
3.14 in
d)
15.84 in
4.
Daniel wants to buy cookies for her friend. The
radius of a cookie is 5 inches. What is the cookie’s
circumference? Use C=2πr
Pi = 3.14
radius of a cookie is 5 inches. What is the cookie’s
circumference? Use C=2πr
Pi = 3.14
a)
10 in
b)
2.5 in
c)
15.7 in
d)
31.4 in
5.
A DVD has a diameter of 15 millimeters. Which equation would help you determine the circumference?
use C=2πr
use C=2πr
a)
c = 15π
b)
C = 2π15
c)
c = 15 ÷ π
d)
c = 15 π
6.
Find the area of the circle. Use Use A=πr2
Pi = 3.14
Pi = 3.14
a)
43.96
b)
153.86
c)
87.82
d)
307.72
7.
The radius is....
a)
a line that crosses through the center and touches each edge
b)
the center point of a circle
c)
a line from the center point to the edge of the circle
d)
an element in science
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