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DochEvi [55]
3 years ago
7

I need help with a problem help pls

Mathematics
2 answers:
Viktor [21]3 years ago
6 0
There are 2 circular bases: A = π r²
A = π (3)²
   = 9 π

There is one lateral face that is a rectangle: A = L x W
In this instance, the length equals the perimeter of the circle: L = 2 π r
A = 2 π (3) x 7
   = 42 π

Surface Area = 2(9 π) + 42 π
                       = 18 π + 42 π
                       = 60 π
                       ≈ 188

Answer: D
Tcecarenko [31]3 years ago
4 0
2 π x 3 x 7 + π x 3^2 x2= 60 π= 188
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A soccer ball has a 35 cm diameter. what is the volume of the contents of the ?
Anettt [7]

Answer:

To calculate the volume of a sphere, use the formula v = ⁴⁄₃πr³, where r is the radius of the sphere. If you don't have the radius, you can find it by dividing the diameter by 2. Once you have the radius, plug it into the formula and solve to find the volume.

Step-by-step explanation:

To find the volume of a soccer ball,the formula is V=4/3 πr^3,where r is the radius and π=3.14. A regulation soccer ball has a radius of 35cm. find the volume of a soccer ball to the nearest cubic centimeter. This is just some to keep in mind.

4 0
3 years ago
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If AYWZ - AYXW, what is true about ZXWZ?
fgiga [73]

Answer:

<XWZ is a right angle

Step-by-step explanation:

Since <YWZ and <XWY both equal 45 degrees, So, <XWZ is a right angle.

8 0
3 years ago
What percent of 60 is 24
Eduardwww [97]

I'm pretty sure its 40%




Best of luck, hope this helps terribly sorry if I'm wrong.




~Animaljamissofab ♥


3 0
3 years ago
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Solve for w <br><br> -4+w = -10
Marizza181 [45]

Answer:

w = -6

Step-by-step explanation:

Adding 4 to both sides (we do this to get rid of the -4) gives us:

-4 + w + 4 = -10 + 4

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7 0
3 years ago
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If sin theta = 2/3 and tan theta &lt;0 what is the value of cos theta?
Mrac [35]

Answer:

d) \cos(\theta)=-\frac{\sqrt{5}}{3}

Step-by-step explanation:

If   \sin(\theta)=\frac{2}{3} and \tan(\theta)\:, then

\theta is in quadrant 2.

Recall that;

\sin^2(\theta)+\cos^2(\theta)=1

We substitute the given sine ratio to obtain;

(\frac{2}{3})^2+\cos^2(\theta)=1

\frac{4}{9}+\cos^2(\theta)=1

\cos^2(\theta)=1-\frac{4}{9}

\cos^2(\theta)=\frac{5}{9}

\cos(\theta)=\pm \sqrt{\frac{5}{9}}

\cos(\theta)=\pm \frac{\sqrt{5}}{3}

We are in the second quadrant, therefore

\cos(\theta)=-\frac{\sqrt{5}}{3}

8 0
3 years ago
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