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3 years ago

The cylinder below has r = 10 inches and a volume of 6283 cubic inches to

Mathematics

1 answer:

Reil [10]3 years ago

4 0

V= piR^2(h)
6283=pi(10^2)(h)
6283=pi(100)h
height = 6283/(pi(100))
then round to the nearest inch

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The diagram shows a regular octagon joined to an equilateral triangle work out the value of X

fgiga [73]

Answer:

$x=165^o$

Step-by-step explanation:

we know that

The measure of the interior angle in an equilateral triangle is equal to 60 degrees

The measure of the interior angle in a regular octagon is equal to

$\frac{(n-2)180}{n}$

where

n is the number of sides

In this problem we have

$n=8\ sides$

substitute

$\frac{(8-2)180}{8}$

$\frac{(6)180}{8}=135^o$

we have that, based in the diagram

The sum of the interior angle of the equilateral triangle plus the interior angle of a regular octagon plus the value of x must be equal to 360 degrees (complete circle)

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solve for x

$x+195^o=360^o$

$x=360^o-195^o$

$x=165^o$

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m_a_m_a [10]

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Step-by-step explanation:

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