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I need help with letter C, find the area

I Need Help With Letter C Find The Area class=

Sagot :

Answer:

x = 38

Step-by-step explanation:

Here, we can use the area formula A = 0.5(Bh) to solve for x.

In this case, A = 399, B = x, and h = 21

[tex]399 = \frac{21}{2} x\\x = \frac{2*399}{21} \\x = 38[/tex]