ANSWERRRRRRR PLZZZZZZz

Mathematics

2 answers:

nalin [4]3 years ago

7 0

Answer:

4w+12

Step-by-step explanation:

p=2l+2w

p=2w+2w+6+6

p=4w+12

konstantin123 [22]3 years ago

5 0

Answer:

This looks like a test question but ok

The answer is look below and read everything

Step-by-step explanation:

So we already know how to answer perimeter 2(L+W).

there are "2" widths well two parts so then you make that w^2 or 4w.

then you double 6 into 12. Now add them to get your perimeter.

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Find the volume of the cone whose base is shown and whose altitude is 8 meters.

Aloiza [94]

$\bf \textit{volume of a cone}\\\\
V=\cfrac{\pi r^2 h}{3}\implies V=\stackrel{base~area}{\pi r^2}\cdot \cfrac{1}{3}\stackrel{height}{h}\\\\
-------------------------------\\\\
\textit{base of this cone}\\\\
B=\stackrel{a~square}{5\cdot 5}+\stackrel{semi-circle}{\frac{\pi r^2}{2}}\implies B=25+\frac{\pi 3^2}{2}\\\\\\ B=\stackrel{square}{25}+\stackrel{semi-circle}{\frac{9\pi }{2}}
\\\\\\
\textit{height of this cone is just 8}\\\\
-------------------------------\\\\$

$\bf \textit{volume of this cone}\\\\
V=B\cdot \cfrac{1}{3}h\implies V=\left( 25+\cfrac{9\pi }{2} \right)\left( \cfrac{8}{3} \right)
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V=\cfrac{200}{3}+\cfrac{3\pi\cdot 4 }{1}\implies V=\cfrac{200}{3}+12\pi$

7 0

4 years ago

-21+2(3-15)-(-3)(+7)+(-3)(-8)

Alexxx [7]

Answer:

$- 21 + 2(3 - 15) - ( - 3)( + 7) + ( - 3)( - 8) \\ = - 21 - 24 + 21 + 24 \\ = 0$