Answer:
8.760 x 10^3
Step-by-step explanation:
There are 8760 hours in 1 year. So, you can convert this to scientific notation by moving the decimal from 8760 three times to the left: 8760. → 8.760 And since it was moved three times, put an exponent of 3 to the 10: 10^3 So, you get 8.760 x 10^3 hours in a year.
Hope this helps! :)
Answer:
volume = 798.58 cm³ (nearest hundredth)
surface area = 678.31 cm³ (nearest hundredth)
Step-by-step explanation:
Volume of a cylinder: ![V=\pi r^2h](https://tex.z-dn.net/?f=V%3D%5Cpi%20r%5E2h)
Surface area of a cylinder: ![SA=2\pi r^2+2\pi rh](https://tex.z-dn.net/?f=SA%3D2%5Cpi%20r%5E2%2B2%5Cpi%20rh)
Circumference: ![C=2\pi r](https://tex.z-dn.net/?f=C%3D2%5Cpi%20r)
(where r is the radius and h is the height)
Given circumference = 56
⇒ ![56 = 2\pi r](https://tex.z-dn.net/?f=56%20%3D%202%5Cpi%20r)
⇒ ![r=\dfrac{56}{2\pi }=\dfrac{28}{\pi }](https://tex.z-dn.net/?f=r%3D%5Cdfrac%7B56%7D%7B2%5Cpi%20%7D%3D%5Cdfrac%7B28%7D%7B%5Cpi%20%7D)
![V=\pi \left(\dfrac{28}{\pi}\right)^2 \times3.2=\dfrac{2508.8}{\pi}=798.58 \textsf{ cm}^3 \textsf{ (nearest hundredth)}](https://tex.z-dn.net/?f=V%3D%5Cpi%20%5Cleft%28%5Cdfrac%7B28%7D%7B%5Cpi%7D%5Cright%29%5E2%20%5Ctimes3.2%3D%5Cdfrac%7B2508.8%7D%7B%5Cpi%7D%3D798.58%20%5Ctextsf%7B%20cm%7D%5E3%20%5Ctextsf%7B%20%28nearest%20hundredth%29%7D)
![SA=2\pi \left(\dfrac{28}{\pi}\right)^2+56 \times3.2=\dfrac{1568}{\pi}+179.2=678.31 \textsf{ cm}^3 \textsf{ (nearest hundredth)}](https://tex.z-dn.net/?f=SA%3D2%5Cpi%20%5Cleft%28%5Cdfrac%7B28%7D%7B%5Cpi%7D%5Cright%29%5E2%2B56%20%5Ctimes3.2%3D%5Cdfrac%7B1568%7D%7B%5Cpi%7D%2B179.2%3D678.31%20%20%5Ctextsf%7B%20cm%7D%5E3%20%5Ctextsf%7B%20%28nearest%20hundredth%29%7D)
Answer:
distance = speed × time
Step-by-step explanation:
The relationship between time, speed, and distance is expressed by the units we use to report speed:
speed = miles per hour
In generic terms, ...
speed = distance/time
To calculate distance, multiply both sides of this equation by time:
distance = speed × time
The triangle lines of symmetry are 60 degrees apart option (A) 60 degrees is correct.
<h3>What is a regular polygon?</h3>
A polygon is a geometric figure with a finite number of sides in two dimensions. On the sides or edges of a polygon, straight-line segments are joined end to end to form a closed shape. The vertices, also known as corners, are the points where two line segments meet and form an angle.
As we know,
The act of using mathematics to address issues in the actual world is known as mathematical thinking.
As the pentagon has 5 sides and 5 lines of symmetry.
The pentagon's lines of symmetry are apart 72(360/5) degrees apart.
Similarly in the triangle, the sum of the interior angle is 180 degrees
The triangle lines of symmetry are 60(180/3) degrees apart.
Thus, the triangle lines of symmetry are 60 degrees apart option (A) 60 degrees is correct.
Learn more about the regular polygon here:
brainly.com/question/11810316
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Answer:
multiplying by 10^4
Step-by-step explanation:
1,000 = 10^4