To find out a glass prism's surface are you should first find the, base's are. Since the base is triangle, it's are formula is :
![A\quad =\quad \frac { h.b }{ 2 }](https://tex.z-dn.net/?f=A%5Cquad%20%3D%5Cquad%20%5Cfrac%20%7B%20h.b%20%7D%7B%202%20%7D%20)
(which h is height and b is base length).
![A\quad =\quad \frac { 7,8.9 }{ 2 } \\ A=\quad \frac { 70,2 }{ 2 } \\ A=\quad 35,1](https://tex.z-dn.net/?f=A%5Cquad%20%3D%5Cquad%20%5Cfrac%20%7B%207%2C8.9%20%7D%7B%202%20%7D%20%5C%5C%20A%3D%5Cquad%20%5Cfrac%20%7B%2070%2C2%20%7D%7B%202%20%7D%20%5C%5C%20A%3D%5Cquad%2035%2C1)
since there are two triangle's their total area will be 70.2 To find the remaining surface's are multiply the perimeter of the base with the length.
![perimeter\quad =\quad 9\cdot 3=27\\ 27\cdot 75=2025](https://tex.z-dn.net/?f=perimeter%5Cquad%20%3D%5Cquad%209%5Ccdot%203%3D27%5C%5C%2027%5Ccdot%2075%3D2025)
then sum the total surface : 70,2 + 2025 = 2095,2
5x-5y=22
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Step-by-step explanation:
6.2(-0.3)
means,6.2×-0.3
-1.86
hope it's helpful ❤❤❤❤❤❤
THANK YOU.
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The answer is B. 24
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Answer:
I think it is 1
Step-by-step explanation:
10% of 500 is 50
then you multipy by 50 which is 1
I hope this helps;)