Answer: ![SA=189\ mm^2](https://tex.z-dn.net/?f=SA%3D189%5C%20mm%5E2)
Step-by-step explanation:
You need to use the following formula for calculate the Surface area of a Right triangular prism:
![SA=ph+2B](https://tex.z-dn.net/?f=SA%3Dph%2B2B)
Where "p" is the perimeter of the base, "h" is the height of the prism and "B" is the area of the base.
You can identify that the height is:
![h=9\ mm](https://tex.z-dn.net/?f=h%3D9%5C%20mm)
The area of a triangle can be found with this formula:
![A=\frac{bH}{2}](https://tex.z-dn.net/?f=A%3D%5Cfrac%7BbH%7D%7B2%7D)
Where "b" is the height of the triangle and "H" is its height.
Knowing this formula, you can find the area of the base of the prism. This is:
![B=\frac{6\ mm*4.5\ mm}{2}\\\\B=13.5\ mm^2](https://tex.z-dn.net/?f=B%3D%5Cfrac%7B6%5C%20mm%2A4.5%5C%20mm%7D%7B2%7D%5C%5C%5C%5CB%3D13.5%5C%20mm%5E2)
Since the perimeter of a figure is the sum of the lenghts of its sides, "p" is:
![p=4.5\ mm+6\ mm+7.5\ mm=18\ mm](https://tex.z-dn.net/?f=p%3D4.5%5C%20mm%2B6%5C%20mm%2B7.5%5C%20mm%3D18%5C%20mm)
Therefore, substituting values into the formula, you get:
![SA=(18 mm)(9} mm)+2(13.5} mm^2)\\\\SA=189\ mm^2](https://tex.z-dn.net/?f=SA%3D%2818%20mm%29%289%7D%20mm%29%2B2%2813.5%7D%20mm%5E2%29%5C%5C%5C%5CSA%3D189%5C%20mm%5E2)
Answer:
305
Step-by-step explanation:
This sequence es the sum of 3
5+3 =8
8+3 = 11
then
101 = 100 + 1
the fisrt date is 5
the another 100:
100*3 = 300
300 + 5 = 305
Answer:
3 3/4 or 3.75
Step-by-step explanation:
3/4×5
3×5/4
15/4
3 3/4
3.75
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Answer:
36(?)
Step-by-step explanation:
i'm not sure,sorry