Answer:
A=(5D-5h)/4
Step-by-step explanation:
So you need to get <em>a</em> on one side so you subtract <em>h</em> on both sides to eliminate the <em>h</em> on the right side: <em>D-h=4/5 a</em>
now you need to multiply 5/4 on both sides in order to make 4/5 <em>a</em> just <em>a</em>
A=(5D-5h)/4
Hope this helps!
Step-by-step explanation:
<h2>Elimination Method</h2>
(x+ 2y=6)2
(2x+4y=12)1
<h3> 2x+4y=12</h3><h3>- 2y+4y=12</h3>
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<u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u>0</u><u>+</u><u>0</u><u>=</u><u>0</u>
<h3 />
To solve this problem, we need to know the formula of the surface area of a triangular prism. The formula is: A = 2

+ (a+b+c) * h
Now we can substitute values and solve
A = 2(0.5 * 4 * 3) + (3+4+5) * 20
A = 12 + 240
A = 252
That means that the answer to this question is 252 square feet.