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3 years ago

Is anyone good at geometry if so can someone help me please ? NO LINKS PLEASE

Mathematics

1 answer:

ella [17]3 years ago

6 0

Answer: A 274.1

Step-by-step explanation: A=(n)(a)(ri/2). So, when eveverything is plugged in it would be (7)(8.7)(9/2)=274.05

<h3>You can and should use this formula for any regular polygon</h3>

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A cone shaped paper water cup has a height of 12 cm and a radius of 6 cm. If the cup is filled with water to half its height, wh

monitta

Answer:

The portion of the volume of the cup that is filled with water is $\frac{1}{8}$

Step-by-step explanation:

step 1

Find the volume of the paper water cup

The volume of the cone is equal to

$V=\frac{1}{3}\pi r^{2}h$

we have

$r=6\ cm$

$h=12\ cm$

substitute

$V=\frac{1}{3}\pi (6)^{2}(12)$

$V=144\pi\ cm^{3}$

step 2

If the cup is filled with water to half its height, find out what portion of the volume of the cup is filled with water

Remember that

If two figures are similar, then the ratio of its volumes is equal to the scale factor elevated to the cube

In this problem the similar cone has half the height of the complete cone

The scale factor is equal to 1/2

therefore

The volume of the cup that is filled with water is equal to the volume of the complete cup by the scale factor elevated to the cube

$V=(1/2)^{3}(144\pi)=(1/8)144\pi\ cm^{3}$

therefore

The portion of the volume of the cup that is filled with water is

$\frac{1}{8}$

8 0

3 years ago

Read 2 more answers

In ΔVWX, \text{m}\angle V = (6x-4)^{\circ}m∠V=(6x−4) ∘ , \text{m}\angle W = (x+12)^{\circ}m∠W=(x+12) ∘ , and \text{m}\angle X =

inn [45]

You have to keep the same numbers for it

7 0

3 years ago

Resuelve las ecuaciones a+(-8/3)=23, 2y+(-5/4)=0,75, 18*=1/3, m-5=2/7<br><br> AYUDA POR FAVOR

Marina86 [1]

Answer:

a bueno bro pa saber.....

4 0

3 years ago

If triangle ABC with vertices A(-2, -5), B(-3, 2), and C (1, -2) a right triangle?

V125BC [204]

Hello :
<span>A(-2, -5), B(-3, 2), and C (1, -2)
calculate : AB² , AC² ,BC²
</span> AB² = ( -3 +2 )² + ( 2 +5 )² =50
AC² = ( 1 +2 )² + ( -2 +5 )² =18
BC² = ( 1 +3 )² + ( -2 - 2 )² = 32
by petagor rule : AB² = AC² + BC²....(<span>ABC is a </span>right triangle in : C )

7 0

4 years ago

What value (s) for n will make this expression true?

umka2103 [35]

Answer:

0 and 3.5

Step-by-step explanation:

6 0

3 years ago

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