Answer:
The answer is 2.35 lemme know if it is wrong!
Answer:
18
Step-by-step explanation:
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Answer:
<h2>240.37 cm^2</h2>
Step-by-step explanation:
The question is on the mensuration of solids, a cylinder
Given data
height of cylinder h= 4 cm
diameter d= 9 cm
radius = d/2= 9/2= 4.5 cm
we know that the surface area of cylinder is
![SA= 2\pi r h+ 2\pi r^2](https://tex.z-dn.net/?f=SA%3D%202%5Cpi%20r%20h%2B%202%5Cpi%20r%5E2)
Substituting our data into the expression we have
![SA= 2*3.142 *4.5* 4+ 2*3.142 4.5^2](https://tex.z-dn.net/?f=SA%3D%202%2A3.142%20%2A4.5%2A%204%2B%202%2A3.142%204.5%5E2)
![SA= 113.12+ 127.25\\\\SA= 240.37 cm^2](https://tex.z-dn.net/?f=SA%3D%20113.12%2B%20127.25%5C%5C%5C%5CSA%3D%20240.37%20cm%5E2)
<em> Therefore the total surface area is 240.37 cm^2</em>
b. Both forces act in the same direction, so add their magnitudes.
Net force: 2 N + 4 N = 6 N to the right
Change in motion: the box will move to the right.
c. The forces act in opposite directions, so subtract the magnitudes. The motion is in the direction of the force with greater magnitude.
Net force: 10 N - 8 N = 2 N to the right
Change in motion: the box will move to the right.