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Brums [2.3K]
3 years ago
10

The area of a circle is 4​ pi square kilometers. what is the radius?

Mathematics
1 answer:
Rasek [7]3 years ago
6 0
Can you type that again?
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lbvjy [14]

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7 0
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OK so I don't want answers, I just want someone to walk me through this and teach me how to do it.
Serggg [28]

Answer:

352cm²

Step-by-step explanation:

The shape is a cuboid and it has 6 faces, and the opposite faces are equal, so I calculate 3 different faces and multiplied it by 2 to give me the total surface area. Therefore, total surface area = the addition of all the surface areas in the shape. And to get each surface area, you have find the area of each of the 6 faces, and add them together, to give you the total surface area.

6 0
2 years ago
The volume of a cone is 62.8 cubic inches. The height of the cone is 15 inches. What is the radius of the cone, rounded to the n
Salsk061 [2.6K]

Answer:

R = sqrt 3 * (V /( pi * h))

V = 62.8

pi = 3.14

h = 15

now we sub

R = sqrt 3 * (62.8 / (3.14 * 15)

R = sqrt 3 * (62.6 / 47.1)

R = sqrt 3 * 1.33

R = sqrt 3.99

R = 1.9 rounds to 2 inches <===

Step-by-step explanation:

4 0
2 years ago
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I’m just confused help!
rusak2 [61]

Answer:

Step-by-step explanation:

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3 years ago
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DiKsa [7]
Hope this helps 

Good luck mate :P

4 0
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