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Darya [45]
3 years ago
9

Pls help me i think its the first one

Mathematics
1 answer:
iogann1982 [59]3 years ago
6 0

Answer:

the first one

Step-by-step explanation:

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The area of the cross section of a sphere at the largest point is 100π square miles. what is the total surface area of this sphe
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The cross-section of a sphere  is a circle . The  area of a circle can be calculated by the formula A= \pi\r^{2} Where r is the radius of the circle.

Given :\pir^{2}   = 100\pi

Solving for r we have:

r^{2} = \frac{100\pi }{\pi}=   100

Or r= 10.

The area of a sphere is calculated by the formula :

SA = 4\pi  R^{2}

Substituting r value we have:

SA= 4\pi\ 10 ^{2}    = 400\pi

The total surface area of this sphere is 400π .

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What is the volume of the triangular prism?
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48

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PLZ HELP HELP WITH ALL PART REALLY NEED HELP WITH THIS!!
Shalnov [3]
First, you should graph the points. For the first number, called the X-Axis, you should to the right or left, and for the second number, called the Y-Axis, you should go up or down.

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The type of triangle you have drawn is an isosceles, because it has 2 equal angles and 2 equal sides.

We know both of the sides that are unknown will be the same because the triangle is bilateral. Then, we can use the bisection we made earlier to solve for the unknown sides using Pythagorean Theorem. Since earlier, we know the entire bottom is 4, we know half of the bottom is 2. We can also see that the height of the triangle is 2. We then plug those numbers into the Pythagorean Theorem (A^2*B^2=C^2) which makes the value of C^2=16. We then take the square root of C^2 and 16 to see that both unknown sides are 4.   



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3 years ago
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RSB [31]
The number decreases. 
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3 years ago
Help Plz
mr Goodwill [35]

Answer:

it's easy if you're 3 below ground level then it would be -3 and now you just add 12

Step-by-step explanation:

-3+12=9

3 0
3 years ago
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