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Amanda [17]
3 years ago
8

Find the area of the trapezoid to the nearest tenth

Mathematics
1 answer:
svet-max [94.6K]3 years ago
8 0
We use the following trigonometric relationship to find the base of the triangle and the remaining side of the rectangle.
 We have then:
 sine (45) = x / 0.7
 We clear x:
 x = 0.7 * sine (45)
 x = 0.494974747
 x = 0.5
 Then, we look for the area of the figure:
 Area of the rectangle:
 A1 = (0.4) * (0.5) = 0.2
 Triangle area:
 A2 = (1/2) * (0.5) * (0.9-0.4)
 A2 = 0.125
 The total area will be:
 A = A1 + A2
 A = 0.2 + 0.125
 A = 0.325 m ^ 2
 Answer:
 A = 0.325 m ^ 2
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Answer:

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Step-by-step explanation:

First, you have to make an equation to solve to find the answer(s):

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1.) 80 - (18 · 1) ≥ 20

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Since 62 ≥ 20 is always true, there are infinitely many solutions.

2.) 80 - (18 · 2) ≥ 20

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