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d1i1m1o1n [39]
3 years ago
9

What is the surface area of a sphere with a radius of 12 units?

Mathematics
2 answers:
Rufina [12.5K]3 years ago
5 0

here's the solution :

In a sphere,

\boxed { \mathsf{surface \: area =  4\pi r {}^{2}  }}

let's solve

  • s = 4 \times \pi \times 12 \times 12

  • s = 144 \times 4 \times \pi

  • s = 576\pi \:  \:  \: unit {}^{2}

hence, correct option is C. 576π unit²

aivan3 [116]3 years ago
3 0
D.

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The total length of wires A, B, and C is 445 cm. Wire A is 45 cm longer than wire B, and wire B is half as long as wire C. How l
drek231 [11]

Answer:

<h2>A = 145 cm</h2><h2 />

Step-by-step explanation:

total length = 445 cm (A + B + C)

A = 45 + B

B = C/2

find A

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(45 + B) + (C/2) + C = 445

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proof:

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3 0
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