Measurements Of Polygons And Circles Worksheets - Lance Mangham, 6th Grade Math, Carroll Isd Page 26
ADVERTISEMENT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40Activity 10-19: Circumference and Area
Name:
Circum means around or bend around. Ferre means to bring or carry. The circumference of a circle is
the measure you need to get around the entire circle. Circumnavigate means to sail around the globe.
22
π
3.14
≈
≈
7
Important formulas for circles:
d
Radius to diameter:
r =
Diameter to radius:
=
2
d
r
2
2
Circumference:
=
2
π
or C
=
π
C
r
d
Area:
π
A
=
r
22
π
Find the circumference and area of each circle given the diameter or radius. Use 3.14 or
for
.
7
Show all work on separate paper including three steps for each problem: write the correct
formula, fill in the numbers for the variables, and then solve the equation.
Radius
Circumference
Area
Diameter
Circumference
Area
1.
3 in
2.
9 yd
1
yd
3.
4.
1.2 ft
2
5.
6 mi
6.
24 yd
7.
55 m
8.
π
400
ft
3
cm
9.
10.
20
π
cm
4
11.
7.1 cm
12.
50 in
1
2
cm
13.
14.
16 in
2
15.
60
π
16.
32 in
m
17.
x cm
18.
y in
Write an expression to find the circumference of the outside of the
donut. The radius of the inner circle is 2 cm. Do not solve.
19-
20.
Write an expression to find the area of the donut. The radius of the
9 cm
inner circle is 2 cm. Do not solve.
If a 14 inch pizza has a 1 inch crust, what is the area of the crust? To
21.
the nearest percent, what percent of the pizza is crust?
th
Created by Lance Mangham, 6
grade math, Carroll ISD
ADVERTISEMENT
0 votes
Related Articles
Related forms
Related Categories
Parent category: Education