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4 years ago

What is the measure of Angle R?

Mathematics

2 answers:

Ivanshal [37]4 years ago

8 0

The sum of angles in triangle is equal to 180 degrees, so

<R =180-56-30

<R=94

Step2247 [10]4 years ago

7 0

Answer:

Step-by-step explanation:

to find angle R you would do 56 + 30 which is 86

then you would take 86 from 180 which would get you 94

hope this helps :)

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The sum of seven angles of an octagon is 132 degrees each. Find the measure of the eighth angle.

Sauron [17]

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so an octagon has 8 sides and has a sum total of (8-2)*180=1080 degrees

if each of 7 angles is 132, then 1080=?+7*132

1080=?+924

156=?

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3 years ago

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3 years ago

Find the volume of a sphere with surface area equal to 100π ft^2

Anni [7]

Answer:

$V=\frac{500}{3}\ \pi(ft^{3})$

Step-by-step explanation:

Hello.

to find the volume of a sphere we must know its radius,

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$A=4\pi r^{2} \\ \\isolating\ r\\\\A=4\pi r^{2}\\r=\sqrt{\frac{A}{4\pi } } \\r=\sqrt{\frac{100\ ft^{2} }{4\pi}} \\\\ r= \sqrt{25\ ft^{2} }\\ r=5\ ft\\$

Now, replacing this value in the volume equation

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have a great day

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3 years ago

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