Hello!
To find the surface area of the given cylinder, we need to use the formula of the surface area of a cylinder.
The formula for the surface area of a cylinder is SA = 2πrh + 2πr².
In this formula, r is the radius and h is the height.
In the given diagram, we see that the height is 6 meters, and the radius 9 meters. With those values, we can substitute them into our formula and solve for the surface area.
In some cases, you are given the diameter. To find the radius, you would need to divide the diameter by two.
SA = 2π(9)(6) + 2π(9)²
SA = 54(2π) + 2(81π)
SA = 108π + 162π
SA = 270π
SA ≈ 848.2 m²
Therefore, the surface area of the given cylinder is choice A, 848.2 m².
The correct answer of
![4{x}^{2} + 4x](https://tex.z-dn.net/?f=4%7Bx%7D%5E%7B2%7D%20%20%2B%204x)
if x=4 is 272.
to solve the equation if x equals 4, you must substitute the x of the 4.
![4( {4}^{3} ) + 4(4)](https://tex.z-dn.net/?f=4%28%20%7B4%7D%5E%7B3%7D%20%29%20%2B%204%284%29)
then solve by order of operations.
solve what is inside the parentheses first
![4(64) + 4(4)](https://tex.z-dn.net/?f=4%2864%29%20%2B%204%284%29)
then do the multiplication of the factors
![256 + 16](https://tex.z-dn.net/?f=256%20%2B%2016)
then the final step, adding, to get the solution of 272
Answer:
C I think, im not sure but sorry if im wrong
Step-by-step explanation:
Hello!
So the problem is 2x-8 = 2(x-4). First off, let's perform the distributive property on the right side of the expression. 2 * x is 2x. 2 * -4 is -8. That makes the right side 2x-8. 2x - 8 = 2x-8, so nothing else needs to be done. Because both sides are identical, all real numbers are the solution.
Answer:
B
Step-by-step explanation: