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3 years ago

Find the length of segment CD with points C(2,2) and D (-1,8)

Mathematics

1 answer:

kumpel [21]3 years ago

6 0

Answer:

Step-by-step explanation:

Calculate the length using the distance formula

d = √ (x₂ - x₁ )² + (y₂ - y₁ )²

with (x₁, y₁ ) = C(2, 2) and (x₂, y₂ ) = D(- 1, 8)

CD = $\sqrt{(-1-2)^2+(8-2)^2}$

= $\sqrt{(-3)^2+6^2}$

= $\sqrt{9+36}$ = $\sqrt{45}$ ≈ 6.7 → D

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The area of a shape is the amount of space it occupies

<h3>Composite figure</h3>

The figure (see attachment) is a composite figure, and the total area is the sum of the areas of each shape that makes up the complete figure

The shape has 6 equilateral triangles, each of which has an area of:

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Where:

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The area of the rectangle is then represented as:

$A_2 =3s \times s$

$A_2 =3s^2$

So, the total area of the figure is:

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$Total =6 \times \sqrt{\frac{3s^2}{4}} + 3s^2$

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$Total =6 \times \sqrt{\frac{3(6)^2}{4}} + 3(6)^2$

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Read more about areas at:

brainly.com/question/21135654

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