Find the circumference of the givenn circle round the nearest ten
11.0
38.5
42.8
22.0
11.0: 34.6 (rounded to nearest ten)
38.5: 121.1 (rounded to nearest ten)
42.8: 134.6 (rounded to nearest ten)
22.0: 69.1 (rounded to nearest ten)
Find the circumference of the give circle. round the nearest ten 3.5cm
11.0
38.5
42.8
22.0
11.0: 34.6 (rounded to nearest ten)
38.5: 121.1 (rounded to nearest ten)
42.8: 134.6 (rounded to nearest ten)
22.0: 69.1 (rounded to nearest ten)
For 3.5cm, circumference = 2πr = 2π(3.5) ≈ 21.9 cm (rounded to nearest ten)
Find the area of the givenn circle round the nearest ten3.5cm
11.0
38.5
42.8
22.0
The formula for the area of a circle is A = πr^2, where r is the radius.
For 3.5cm, the area ≈ π(3.5)^2 ≈ 38.5 square cm (rounded to nearest ten).
11.0: 380.1 (rounded to nearest ten)
38.5: 4637.2 (rounded to nearest ten)
42.8: 5725.5 (rounded to nearest ten)
22.0: 1519.7 (rounded to nearest ten)
To find the circumference of a circle, you can use the formula C = π * d, where C is the circumference and d is the diameter. However, since the diameter is not directly given, we need to first find the radius.
Given a circle with a diameter of 11.0, the radius (r) is half the diameter, so r = 11.0 / 2 = 5.5.
Now, we can use the formula for circumference to calculate C:
C = π * d = π * 11.0 = 34.5575
Rounding to the nearest ten, the circumference is approximately 30.
For the second circle with a diameter of 38.5, the radius (r) is 38.5 / 2 = 19.25.
Now, using the formula C = π * d:
C = π * 38.5 = 120.991
Rounding to the nearest ten, the circumference is approximately 120.
For the third circle with a diameter of 42.8, the radius (r) is 42.8 / 2 = 21.4.
Again, using the formula C = π * d:
C = π * 42.8 = 134.720
Rounding to the nearest ten, the circumference is approximately 130.
Finally, for the fourth circle with a diameter of 22.0, the radius (r) is 22.0 / 2 = 11.0.
Using the formula C = π * d:
C = π * 22.0 = 69.115
Rounding to the nearest ten, the circumference is approximately 70.
Therefore, the approximate circumferences to the nearest ten for the given circles are:
11.0 -> 30
38.5 -> 120
42.8 -> 130
22.0 -> 70
To find the circumference of a circle, you can use the formula:
C = 2πr
Where C is the circumference, π (pi) is a mathematical constant approximately equal to 3.14159, and r is the radius of the circle.
To find the circumference rounded to the nearest ten, we will round our final answer to the nearest ten.
Let's calculate the circumference for each given radius:
1. For a circle with a radius of 11.0:
C = 2π(11.0) = 22π ≈ 22 × 3.14159 = 69.115 ≈ 70 (rounded to the nearest ten)
2. For a circle with a radius of 38.5:
C = 2π(38.5) = 77π ≈ 77 × 3.14159 = 241.908 ≈ 240 (rounded to the nearest ten)
3. For a circle with a radius of 42.8:
C = 2π(42.8) = 85.6π ≈ 85.6 × 3.14159 = 268.952 ≈ 270 (rounded to the nearest ten)
4. For a circle with a radius of 22.0:
C = 2π(22.0) = 44π ≈ 44 × 3.14159 = 138.169 ≈ 140 (rounded to the nearest ten)
Therefore, the circumferences rounded to the nearest ten are as follows:
- Circle with a radius of 11.0: 70
- Circle with a radius of 38.5: 240
- Circle with a radius of 42.8: 270
- Circle with a radius of 22.0: 140