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katen-ka-za [31]
2 years ago
14

For a project in her Geometry class, Chee uses a mirror on the ground to measure the

Mathematics
1 answer:
maria [59]2 years ago
7 0

The geometry technique that Chee uses to find the height of the goalpost is the equal ratio of the corresponding sides of similar triangles.

Correct response:

  • The eight of the goalpost is approximately <u>16.91 meters</u>.

<h3>Methods used to calculate the height</h3>

The length Chee is using the mirror to measure = The height of her school's football goalpost

The distance of the mirror from the goalpost = 14.35 meters

The distance on the other side of the mirror Chee steps to =  1.4 meters

The distance from her eyes to the ground = 1.65 meters

Required:

How tall is the goalpost.

Solution:

By using similar triangles relationships, we have;

\dfrac{1.65}{1.4} = \mathbf{\dfrac{Height \ of \ the \ goalpost, h}{14.35} }

Which gives;

h = \dfrac{1.65}{1.4} \times 14.35 = 16.9125 \approx \mathbf{ 16.91}

  • The height of the goalpost, h ≈ <u>16.91 meters</u>

Learn more about similar triangles here:

brainly.com/question/10676220

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Answer:

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Step-by-step explanation:

The computation of the number of cars to be filled is shown below:

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= 13

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Igoryamba
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3 years ago
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kiruha [24]
<h3>Answer:  Choice B)  468 cm^2</h3>

============================================================

Explanation:

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A = 0.5*b*h

A = 0.5*18*13

A = 117 square cm or cm^2

This represents the area of one face, but there are 4 identical copies of this triangular face assuming this tetrahedron is a regular polyhedron. So we have a total surface area of 4*117 = 468 cm^2 which points us to choice B

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2 years ago
What is the length of the diagonal of a square with side length 50\sqrt{2} cm? Express your answer in simplest form.
jenyasd209 [6]

Answer:

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Step-by-step explanation:

Given:

Side length of square = 50\sqrt{2}   cm

Using pythagorean theorem:

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