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Anna11 [10]
3 years ago
10

A triangular prism whose total surface area = 64 cm2, and its lateral area = 40 cm2, find the area of ​​its base?

Mathematics
1 answer:
Tresset [83]3 years ago
7 0

Answer:

Area of ​​its base = 12cm²

Step-by-step explanation:

The Area of ​​its base = 1/2 of its surface area - 1/2 of its lateral area

Its surface area = 64, then 1/2 X 64 = 32cm²

Its lateral area = 40, then 1/2 X 40 = 20cm²

So, Area of ​​its base = 32 - 20 = 12cm²

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So if the dress is 25% off, that means you are paying 75% of the original price.

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divide both sides by 0.75 to isolate original price

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4 years ago
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