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abruzzese [7]
3 years ago
12

I need help finding surface area for both of these shapes with work

Mathematics
2 answers:
Alex73 [517]3 years ago
7 0
For the base of the shape all you need to do is multiply 25x25=625ft²

then for the 4 sides you need to multiply 25x32=800ft²

and because there are 4 sides you multiply 800x4=3200

so now you add 3200 with 625 (3825) and there's your area
liubo4ka [24]3 years ago
4 0
Nice, so 4 triangles
1 square base (length=width=25)

area triangle=1/2 times base time height
the height is 32
and base is 25
4 of them so
4*1/2*25*32
2*25*32
1600 is triangles

base is 25*25=625

add to find tiatl
1600+625=2225 square feet
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Step-by-step explanation:

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<h3>Completing the square</h3>

One way to "complete the square" is to add and subtract the constant necessary to make a perfect square trinomial from the variable terms.

Here, we recognize the coefficient of the linear term is -12, so the necessary constant is (-12/2)² = 36. Adding and subtracting this, we have ...

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Rearranging into the desired form, this is ...

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<em>Additional comment</em>

Another way to achieve the same effect is to split the given constant into two parts, one of which is the constant necessary to complete the square.

  f(x) = x² -12x +(36 +14)

  f(x) = (x² -12x +36) +14

  f(x) = (x -6)² +14

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