HELP PLEASEE AND ANSWER MY OTHER QUESTIONS ASAP 5. Jesse rotated the triangle 90° clockwise about the origin to create figure

Mathematics

1 answer:

Molodets [167]3 years ago

6 0

Answer:

its b cus hit dat hommie

Step-by-step explanation:

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The perimeter of a rectangle is 46cm. The length is 13 cm. What is the width?

gladu [14]

1.) 2 sides are already gonna be 13 so you already have 26 is you add up both those sides. 13+13=26
2.)Subtract 26 from 46 to get the sum of both the widths added together.
46-26=20
3.)Divide 20 by 2 so that you can get the width on one side of the rectangle. 20 / 2 = 10
4.) The width of the rectangle above is 10
I hope this helps :)

5 0

3 years ago

Read 2 more answers

Find the surface area of the solid. Round to two decimal places

Ne4ueva [31]

Check the picture below.

so, to get the area of the triangles, we can simply run a perpendicular line from the top to the base, and end up with a right-triangle with a base of 22 and a hypotenuse of 34, let's find the altitude.

$\bf \textit{using the pythagorean theorem}
\\\\
c^2=a^2+b^2\implies \sqrt{c^2-a^2}=b
\qquad 
\begin{cases}
c=hypotenuse\\
a=adjacent\\
b=opposite\\
\end{cases}
\\\\\\
\sqrt{34^2-22^2}=b\implies \sqrt{672}=b$

so then the surface area of the triangular prism is,

$\bf \stackrel{\textit{left and right}}{2(34\cdot 76)}~~+~~\stackrel{\textit{bottom}}{(44\cdot 76)}~~+~~\stackrel{\textit{front and back}}{2\left[\cfrac{1}{2}(44)(\sqrt{672}) \right]}
\\\\\\
8512~~+~~(44)(\sqrt{672})\qquad \approx\qquad 9652.61036291978$