Find the circumference of the circle of 8 4/5 inches to the nearest tenth. Use 3.14. Round to the answer to the nearest tenth of an inch.
A)13.8 in
B)27.6 in
C)60.8 in
D)243.2 in
A metal pole connects a horse's saddle to another pole in the middle of the corral. This setup allows to safely walk in circles around the pole in the center. As the horse walk a circle begins to form on the ground. If the rod is approximately 2.5 yards long what is the circumference of the circle on the ground? Use pi=3.14.
A)7.85 yards
B)15.7 yards
C)19.625 yards
D)39.25 yards
The diameter of a bicycle wheel is 20 in. What is the area of the wheel? (Use 3.14 for π)
1 point
62.8 square inches
1,256 square inches
314 square inches
15.7 square inches
A storm is expected to hit 7 mi in every direction from a small town. What is the area that the storm will affect? (Use 3.14 for π)
1 point
153.86 square miles
38.47 square miles
43.96 square miles
21.98 square miles
Find the diameter of a circle with a circumference of 21.98 m.( Use 3.14 for π) *
1 point
6m
8m
7m
5m
Anonymous is correct but to make sure they stay correct here's the answers:
1. 27.6 inch
2. 15.7 yerd
3. 314 squar inch
4. 153.86 squar mil
5. 7m
B
B
C
A
C
i can confirm i got 5/5 thx @Widow
thankuu so much @widow and @Anonymous
#1, makes no sense, what is the question?
Of Anonymous' answers, only the last one is correct
Why don't you show your work so somebody can check it?
To find the circumference of a circle, you can use the formula C = πd, where C is the circumference and d is the diameter.
Let's solve the problems step by step:
1) The circumference of a circle with a diameter of 8 4/5 inches:
First, convert the mixed number 8 4/5 to an improper fraction: 8 4/5 = (8 * 5 + 4)/5 = 44/5 inches.
Now, multiply the diameter by π (3.14) to find the circumference: C = 3.14 * (44/5) = 138.56/5 inches.
Rounding the result to the nearest tenth, we get C ≈ 27.7 inches, which is closest to option B) 27.6 in.
2) The circumference of a circle with a radius of 2.5 yards:
The radius is half the length of the diameter. So, the diameter is 2 times the radius, which gives us 2.5 * 2 = 5 yards.
Now, we can use the formula C = πd and substitute the value of the diameter: C = 3.14 * 5 = 15.7 yards.
Hence, the circumference of the circle on the ground is approximately 15.7 yards, which corresponds to option B) 15.7 yards.
3) The area of a circle with a diameter of 20 inches:
To find the area of a circle, you can use the formula A = πr^2, where A is the area and r is the radius.
The radius is half the length of the diameter, so the radius is 20/2 = 10 inches.
Now, substitute the value of the radius into the formula: A = 3.14 * (10^2) = 314 square inches.
Thus, the area of the bicycle wheel is 314 square inches, which is option C) 314 square inches.
4) The area affected by a storm that hits 7 miles in every direction from a small town:
The radius of the affected area is 7 miles.
To find the area, use the formula A = πr^2 and substitute the radius: A = 3.14 * (7^2) = 153.86 square miles.
Therefore, the area affected by the storm is approximately 153.86 square miles, which corresponds to option A) 153.86 square miles.
5) Finding the diameter of a circle with a circumference of 21.98 m:
To find the diameter, you can rearrange the formula C = πd and solve for d: d = C/π.
Substituting the given circumference: d = 21.98/3.14 = 7 meters.
Thus, the diameter of the circle is 7 meters, which corresponds to option C) 7m.
B
A
A
D
C