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Marat540 [252]
3 years ago
13

Using the net below, find the surface area

Mathematics
1 answer:
Leto [7]3 years ago
4 0

Answer:

51 in²

Step-by-step explanation:

formula of a triangle: \frac{1}{2}bh

the base is 3 and the height is 7

1/2(3)(7)

1/2(21)=

10.5

Since there are 4 of these same triangles, we multiply by 4.

10.5 · 4 = 42 in²

formula of a square: bh

base is 3 and height is 3

(3)(3) =

9 in²

add them together and you get your answer of 51 in²

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