Hey there
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The correct answer is
This is basically a 3-4-5 triangle, but doubled to 6-8-10.
You can verify that with the Pythagorean Theorem.
a² + 8² = 10²
a² = 100 - 64
a² = 36
a = 6
If the legs are 6 and 8, the area is half the product of the legs:
A = ½ * 6 * 8
A = 24
Answer:
C) 24 sq. ft.
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Hope this helps you