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sladkih [1.3K]
3 years ago
8

Find the surface area of a sphere with a radius of 9 cm. Surface Area = [?] cm?

Mathematics
2 answers:
miskamm [114]3 years ago
8 0

Answer:

1,017.36  \:  {cm}^{2}

Step-by-step explanation:

Surface area of a sphere

= 4\pi {r}^{2}  \\  = 4 \times 3.14 {(6)}^{2}  \\  =  12.56 \times 81 \\  = 1,017.36  \:  {cm}^{2}

ivann1987 [24]3 years ago
3 0

Answer:

1017.36 cm²

Step-by-step explanation:

<u>Given </u><u>:</u><u>-</u><u> </u>

  • Radius = 9cm .

<u>We </u><u>know</u><u> </u><u>,</u>

  • SA = 4π r²
  • SA = 4* 3.14 * (9cm)²
  • SA = 4 *3.14*81cm²
  • SA = 1017.36 cm²
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