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jenyasd209 [6]
3 years ago
6

PLEASE HELP

Mathematics
2 answers:
denpristay [2]3 years ago
6 0

the statement must be true

D. <A+<D=180°

galben [10]3 years ago
5 0

Answer:

b c = 180

Step-by-step explanation:

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A commercial building has seven levels of car parking spaces. Each level has four rows and each row has 38 car spaces. How many
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So, all we have to do here is multiply:

First, the amount of car spaces by the amount of rows:

38 x 4 = 152  

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Then, the number of levels by the number of parking spots on each level:

152 x 7 = 1064

So, a total of 1,064 cars can be parked in this building!

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Step-by-step explanation:

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3 years ago
The radius of the base of the cylinder is 2x cm and the height of the cylinder is h cm.
valentina_108 [34]

Answer:

h = 9x

Step-by-step explanation:

Given: i. for the cylinder, base radius = 2x cm, height = h cm

           ii. for the sphere, radius = 3x cm

           iii.  volume of the cylinder = volume of the sphere

volume of a cylinder is given as;

volume = \frac{1}{3}\pir^{2}h

where: r is its base radius and h the height

volume of the given cylinder = \frac{1}{3}\pi x (2x)^{2} x h

                                              = \frac{1}{3}\pi x 4x^{2} x h

                                              = \frac{4}{3}\pix^{2} h

volume of a sphere = \frac{4}{3}\pir^{3}

where r is the radius.

volume of the given sphere =  \frac{4}{3}\pi x (3x)^{3}

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                                         = 12\pix^{3}

Since,

volume of the cylinder = volume of the sphere

Then we have;

\frac{4}{3}\pix^{2} h = 12\pix^{3}

4\pix^{2} h = 36\pix^{3}

subtract x^{2} from both sides

4\pih = 36\pix

divide both sides by 4\pi

h = \frac{36\pi x}{4\pi }

  = 9x

h = 9x

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2 years ago
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Answer:

Step-by-step explanation:

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