3 years ago

A. 81. B. 27 C. 108 D. 135

Mathematics

2 answers:

Zanzabum3 years ago

8 0

Answer:

D 135

hope this helps

- a chair with internet

just olya [345]3 years ago

8 0

nvm this is wrong answer dont take it

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Another one OMG lol sorry →← ∨ω∨

velikii [3]

Answer:

129

Step-by-step explanation:

144x0.90=129

5 0

3 years ago

What is the angle measure of an arc bounding sector with an area of 5pie square miles?

Snowcat [4.5K]

if the diameter is 20, the its radius must be half that or 10.

$\textit{area of a sector of a circle}\\\\ A=\cfrac{\theta \pi r^2}{360}~~ \begin{cases} r=radius\\ \theta =\stackrel{degrees}{angle}\\[-0.5em] \hrulefill\\ A=5\pi \\ r=10 \end{cases}\implies \begin{array}{llll} 5\pi =\cfrac{\theta \pi (10)^2}{360}\implies 5\pi =\cfrac{5\pi \theta }{18} \\\\\\ \cfrac{5\pi }{5\pi }=\cfrac{\theta }{18}\implies 1=\cfrac{\theta }{18}\implies 18=\theta \end{array}$