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AlekseyPX
2 years ago
12

Find the total surface area. A. 2,016 km² B. 6,156 km² C. 1,368 km² D. 165 km²

Mathematics
1 answer:
kirill [66]2 years ago
5 0

Answer:

\boxed{A. 2,016 km^2}

Step-by-step explanation:

<em>Hey there!</em>

<em />

TSA is calculated using,

TSA = 2wl + 2lh + 2hw

Plug in the given info.

w = 18

l = 18

h = 19

TSA = 2(18)(18) + 2(18)(19) + 2(19)(18)

TSA = 648 + 684 + 684

TSA = 2,016km²

<em>Hope this helps :)</em>

<em />

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Let x and y represent the measures of the angles, with x representing the larger angle.

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Substituting the expression given by the second equation into the first, we have ...

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<u>Step 1: Define</u>

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