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OLEGan [10]
3 years ago
12

What is the surface area of a triangular pyramid if each face has an area of 80 m2? A. 240 m2 B. 160 m2 C. 320 m2 D. 20 m2

Mathematics
1 answer:
alexdok [17]3 years ago
5 0
If each face is 80m² and there are 4 identical faces, the answer would be 4 x 80 = 320m² - C
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Answer:

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Step-by-step explanation:

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Let amount in federal be f

and

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THus, we can form the equation shown below and solve:

f(0.045) + (43,000 - f)(0.02) = 1585

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0.025f = 725

f = 29,000

and on private = 43,000 - 29,000 = 14,000

Hence

federal loan amount = $29,000

private loan amount = $14,000

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