1.) If a circle has a radius of 3.7, what is the diameter?
d = _____
1.85
23.24
7.40
6.35
2.) If a circle has a diameter of 5, what is the radius?
r = _____
10.00
2.50
31.40
2.75
3.) If a a circle has radius 7, what is the area?
A = _____
153.86
14.00
43.96
3.50
4.) Find the circumference of the circle in number 3.
C = _____
153.86
14.00
43.96
3.50
5.) If a circle has a diameter of 20, the area is _____.
314.00
125.60
1256.00
62.80
6.) For the circle in number 5, the circumference is _____.
62.80
314.00
125.60
1256.00
7.) If a circle has a radius of 1.5, the area is _____.
0.75
3.00
9.42
7.07
8.) For the circle in number 7, the circumference is _____.
7.07
9.42
3.00
0.75
9.) If the circumference of a circle is 471, the diameter is ____.
235.50
150.00
2957.88
75.00
10.) A dog's leash is tied to a peg in the ground. The leash is 21 feet long. Find the area over which the dog has to run.
A = _____
65.94
346.19
131.88
1384.74
d = _____
1.85
23.24
7.40
6.35
2.) If a circle has a diameter of 5, what is the radius?
r = _____
10.00
2.50
31.40
2.75
3.) If a a circle has radius 7, what is the area?
A = _____
153.86
14.00
43.96
3.50
4.) Find the circumference of the circle in number 3.
C = _____
153.86
14.00
43.96
3.50
5.) If a circle has a diameter of 20, the area is _____.
314.00
125.60
1256.00
62.80
6.) For the circle in number 5, the circumference is _____.
62.80
314.00
125.60
1256.00
7.) If a circle has a radius of 1.5, the area is _____.
0.75
3.00
9.42
7.07
8.) For the circle in number 7, the circumference is _____.
7.07
9.42
3.00
0.75
9.) If the circumference of a circle is 471, the diameter is ____.
235.50
150.00
2957.88
75.00
10.) A dog's leash is tied to a peg in the ground. The leash is 21 feet long. Find the area over which the dog has to run.
A = _____
65.94
346.19
131.88
1384.74
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1.) diameter = 2*radius
diameter = 2(3.7)
diameter = 7.4
2.) diameter = 2*radius
5 = 2*radius
radius = 2.5
3.) Area = π*radius^2
Area = π(7^2)
Area = 49π
Area ≈ 153.9 (153.86 out of your options)
4.) Circumference = 2*π*radius
Circumference = 2*π*7
Circumference = 14π
Circumference ≈ 43.98 (43.96 out of your options)
5.) diameter = 2*radius
20 = 2*radius
radius = 10
Area = π*radius^2
Area = π*10^2
Area = 100π
Area ≈ 314
6.) Circumference = π*diameter
Circumference = π*20
Circumference ≈ 62.8
7.) Area = π*radius^2
Area = π*1.5^2
Area = 2.25π
Area ≈ 7.07
8.) Circumference = 2*π*radius
Circumference = 2*π*1.5
Circumference = 3π
Circumference ≈ 9.42
9.) Circumference = π*diameter
471 = π*diameter
diameter ≈ 149.92 (150 out of your options)
10.) Area = π*radius^2
Area = π*21^2
Area = 441π
Area ≈ 1385.4 (1384.74 out of your options)
diameter = 2(3.7)
diameter = 7.4
2.) diameter = 2*radius
5 = 2*radius
radius = 2.5
3.) Area = π*radius^2
Area = π(7^2)
Area = 49π
Area ≈ 153.9 (153.86 out of your options)
4.) Circumference = 2*π*radius
Circumference = 2*π*7
Circumference = 14π
Circumference ≈ 43.98 (43.96 out of your options)
5.) diameter = 2*radius
20 = 2*radius
radius = 10
Area = π*radius^2
Area = π*10^2
Area = 100π
Area ≈ 314
6.) Circumference = π*diameter
Circumference = π*20
Circumference ≈ 62.8
7.) Area = π*radius^2
Area = π*1.5^2
Area = 2.25π
Area ≈ 7.07
8.) Circumference = 2*π*radius
Circumference = 2*π*1.5
Circumference = 3π
Circumference ≈ 9.42
9.) Circumference = π*diameter
471 = π*diameter
diameter ≈ 149.92 (150 out of your options)
10.) Area = π*radius^2
Area = π*21^2
Area = 441π
Area ≈ 1385.4 (1384.74 out of your options)
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R=D/2, D=2R circ =2*pi*R pi=3.1416, area= pi* R^2 circ=Pi*D
#5 62.80
10 1384.74 sq ft but how long is the dog? think about it. if the dog is 3 feet long he can cover 1808.64 sq ft.
you do the rest, I'm tired.
#5 62.80
10 1384.74 sq ft but how long is the dog? think about it. if the dog is 3 feet long he can cover 1808.64 sq ft.
you do the rest, I'm tired.
-
formula
Diameter = 2 Radius
C = pi D = 2pi R
Area = pi R^2
Diameter = 2 Radius
C = pi D = 2pi R
Area = pi R^2
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d = 2r
C = 2 π r
A = π r²
π. = 3.14 (approximately)
C = 2 π r
A = π r²
π. = 3.14 (approximately)