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andrey2020 [161]
3 years ago
13

Determine the volume of the figure. Use 3.14 for

Mathematics
2 answers:
geniusboy [140]3 years ago
8 0

Answer:

2768.6

Step-by-step explanation:

Reil [10]3 years ago
3 0

Answer:

1986.9 units^3

Step-by-step explanation:

Hemisphere:

V=[(4/3)pi*r^3]/2

V=[(4/3)pi*7.2^3]/2

V=[(4/3)pi*373.248]/2

V=1562.66496/2

V=781.33248

Cylinder:

V=pi*r^2*h

V=pi*7.2^2*7.4

V=pi*51.84*7.4

V=1204.55424

Added together:

781.33248+1204.55424 ~ 1986.9 units^3

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Flura [38]

Answer:

The number of red pens is 20.

The number of blue pens is 4.

Step-by-step explanation:

We are given that, the ratio of number of red pens to the number of blue pens is 5 : 1.

∴ Let us assume that the number of red pens be 5<em>x</em> and number of blue pens be <em>x</em>.

Total number of pens in the desk drawer = 24

Now, according to question :

Number of red pens + Number of blue pens = 24

⇒5<em>x</em> + <em>x</em> = 24

⇒6<em>x</em> = 24

⇒x=\frac{24}{6}=4

So, number of red pens in the drawer = 5<em>x</em> = 5 × 4 = 20

Number of blue pens in the drawer = <em>x</em> = 4

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3 years ago
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andriy [413]

Answer:

its 300

Step-by-step explanation:

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3 years ago
PLEASE HELP!!! :))
Nina [5.8K]

For a better understanding of the solution given here please find the attached file which has the relevant diagram.

To answer this question we will have to make use of <u>the Isosceles Triangle Theorem</u> which states that the perpendicular bisector of the base of an isosceles triangle is also the angle bisector of the vertex angle. Thus, as a corollary we know that is EF is the angle bisector of the vertex angle ∠E, then, EF is the perpendicular bisector of the of the base DK.

Please follow the diagram of a complete understanding of the logic and the solution.

As EF is the angle bisector as given in the question, thus we will have:

m\angle DEK=2\times m\angle DE F=2\times 43^{\circ}=86^{\circ}.

Also, from the Theorem we know that KF will be half of DK and thus, KF will be:KF=\frac{1}{2}DK= \frac{1}{2}\times 16=8 centimeters.

Likewise, from the same theorem we have: m\angle EFD=90^{\circ}

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3 years ago
Cd + ed = m solve for d
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Answer:

677

Step-by-step explanation:

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4 years ago
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Serhud [2]

Answer:

16 or 8

Step-by-step explanation:

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