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Tamiku [17]
2 years ago
15

Need help asap bc I don’t understand this. I’m not trying to fail. Been on this lesson for 30+ min

Mathematics
1 answer:
Nitella [24]2 years ago
7 0

Answer:

75 in²

Step-by-step explanation:

From the diagram, you can see that the shape is made up of a square and 4 triangles. (We know it's a square as the width = length).

First, find the area of the square.

Area of a square = width x length = 5 x 5 = 25 in²

All the triangles are the same, so we need to find the area of one of the triangle and multiply it by 4.

Area of a triangle = \frac{1}{2} x base x height = \frac{1}{2} x 5 x 5 = 12.5 in²

So total area of 4 of these triangles = 4 x 12.5 = 50 in²

Therefore the total surface area = 25 + 50 = 75 in²

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18 is what percent of 40
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Find the lengths of g, h, and j. Round answers to the nearest tenth. (marking brainliest for correct)
Bezzdna [24]

Answer:

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Step-by-step explanation:

The overall shape given and the shape within, are both right triangles. With right triangles, you are allowed to use the pythagorean theorem formula (a^{2} + b^{2} = c^{2}) in order to solve for some sides. In this case, that would be j and h. The five in the smaller triangle is represented by b and the 12 is the hypotenuse so it is represented by c. When you plug in those numbers in the pythagorean theorem formula, you will find the value of j to be 13. When looking at this, we see that 12 is the second greatest value in the right triangle values that we just found, so we know the the opposing angle for that one will be 60 degrees. The 5's opposing side is therefore 30 degrees. When subtracting 90 and 30, we get 60, so therefore you can use the 30 60 90 formula to find the sides of the bigger triangle. The 60 degrees represents g. This formula will be a\sqrt{3}. The a is 12 since it is the smallest value. So therefore, g is 12\sqrt{3}, which is 20.8. Now that we have this side, we can just use the pythagorean theorem formula to find the remaining side. Therefore, h is going to be 24

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Answer:Hi Step-by-step explanation:

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