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Irina18 [472]
3 years ago
14

Write an equivalent expression 8(y-7z+1)

Mathematics
1 answer:
Musya8 [376]3 years ago
5 0

Answer:

8y−56z+8

Step-by-step explanation:

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x<8

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I need to find the limit
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3 years ago
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Find the surface area (in terms of π) of a sphere if its volume is 972 π.
Sholpan [36]

Surface area of sphere is Surface\,\,Area=324\pi

Step-by-step explanation:

We need to find the surface area of the sphere while we are given volume of sphere = 972π

The formula used to find surface area is:

Surface\,\,Area=4\pi r^2

We need to find radius of sphere

We are given Volume = 972π, using this volume we can find radius of sphere

The formula used to find volume is:

Volume=\frac{4}{3}\pi  r^3

Putting values and finding r

972\pi =\frac{4}{3}\pi  r^3

r^3=\frac{972\pi *3}{4\pi } \\r^3=729

Taking cube root on both sides

\sqrt[3]{r^3}=\sqrt[3]{729}\\ r=9

So, Radius of sphere r=9

Now finding surface area:

Surface\,\,Area=4\pi r^2

Surface\,\,Area=4\pi (9)^2

Surface\,\,Area=4\pi 81

Surface\,\,Area=324\pi

So, surface area of sphere is Surface\,\,Area=324\pi

Keywords: Surface area of sphere

Learn more about Surface area of sphere at:

  • brainly.com/question/12613605
  • brainly.com/question/6443737
  • brainly.com/question/12041380

#leanwithBrainly

8 0
3 years ago
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