For this case we must simplify the following expression:
We eliminate the parentheses taking into account that:
So, we have:
We add similar terms taking into account that:
Different signs are subtracted and the sign of the major is placed:
Answer:
Answer:
28π cm²
Step-by-step explanation:
The surface of a cylinder is given by the formula:
where r is the radius of the base, and h is the height.
Using the image, we can find that the radius of the cylinder would be 2 cm, and the height would be 5 cm.
Now, to find the surface area of the cylinder, we would have to plug in 2 for r (the radius of the base) and 5 for h (the height of the cylinder) into the formula for the surface area of a cylinder.
Now we plug in 2 for r and 5 for h for the equation for the surface area of a cylinder:
2π(2)(5) + 2π(2)² = 20π + 2π(4) = 20π + 8π = 28π
Remember, the radius and the height are given to us in cm, and w are solving for surface area, so the answer should be in cm² (square centimeters).
The surface area of the cylinder would be 28π cm².
28π cm² would be an exact answer. For the approximate answer, plug in 3.14 (most math classes use 3.14 to approximate π) for π.
I hope you find this helpful. :)
Just break it down into simple numbers
Answer:
1.68 as a percent is 168%.
Step-by-step explanation:
To convert 1.68 to a percentage, multiply the number 1.68 by 100.
It would take (2 hours and 45 min) for the train to travel this far
Hope this helps.
