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Lunna [17]
2 years ago
14

The diameter of a circle is 4 kilometers. What is the circle's circumference?

Mathematics
2 answers:
iragen [17]2 years ago
7 0

Answer:

12.56km

Step-by-step explanation:

C=2pi r

2r=d

C=pi d=4pi=4x3.14=12.56km

scZoUnD [109]2 years ago
6 0

Answer:

12.57 km

Step-by-step explanation:

Radius = 4 / 2 = 2 km

Circumference = 2πr = 2π(2) = 4π = 12.57 km

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The three-dimensional figure below is a cylinder with a hole in the shape of a rectangular prism going through the center of it.
Lerok [7]

Answer: uhh i think it’s 1778 but im younger so don’t yell if i’m incorrect

Step-by-step explanation:

3 0
2 years ago
One light-year equals 5.9 x 1012 miles. How many light-years are in 6.79
inna [77]

Option B

The number of light years in 6.79 \times 10^{16} miles is 11508 light years

<em><u>Solution:</u></em>

Given that,

One light-year equals 5.9 x 10^12 miles

Therefore,

1 \text{ light year } = 5.9 \times 10^{12} \text{ miles }

To find: Number of light years in 6.79 \times 10^{16} miles

Let "x" be the number of light years in 6.79 \times 10^{16} miles

Then number of light years in 6.79 \times 10^{16} miles can be found by dividing 6.79 \times 10^{16} miles by miles in 1 light year

\text{Number of light years in } 6.79 \times 10^{16} miles = \frac{6.79 \times 10^{16}}{5.9 \times 10^{12}}\\\\\text{Use the law of exponent }\\\\\frac{a^m}{a^n} = a^{m-n}\\\\\text{Number of light years in } 6.79 \times 10^{16} miles = \frac{6.79}{5.9} \times 10^{16-12}\\\\\text{Number of light years in } 6.79 \times 10^{16} miles = 1.1508 \times 10^4\\\\\text{Number of light years in } 6.79 \times 10^{16} miles = 11508

Thus number of light years in 6.79 \times 10^{16} miles is 11508 light years

3 0
3 years ago
Please help and explain!! I really don't get this
const2013 [10]
Average rate of change means find the slope of the secant line. So if there is a function f(x) and you want to find the average R.O.C over the interval [a,b], it would be (f(b)-f(a))/(b-a)

1. (f(3)-f(1))/(3-1)= (0-(-2))/2= 1, so D.

2. Same concept; (8-4)/(3-1)=2, so A.

3. Again, (39-(-1))/5= 8, B.
6 0
3 years ago
How do you find the area of the base in a cylinder
Llana [10]

Answer:

area is easy because its always the  Length times the Width of something  so after you get the area you times it by the base which is the bottom part of the cylinder

Step-by-step explanation:

so you would just get the length and the Width and multiply them and... theres your answer!

6 0
2 years ago
4^3sqrt(3x-3)^2+2=38
vlada-n [284]
Here, 4³√(3x-3)² + 2 = 38

= 4³ (3x - 3) = 38 - 2

= 192x - 192 = 36

= 192x = 192 + 36

= x = 228/192

= x = 1.1875  [ Final Answer ]

Hope this helps!
4 0
3 years ago
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