2 Answers

Sam Mullin · Answer 1 · 2020-04-30T22:04:21+0000

Answer:

2,122.64 square units or
$676 \pi$ units squared

Explanation:

The surface area of a sphere can be found using the formula
$A=4\pi r^2$ . Since the radius is 13 units, substitute r=13.

$SA=4\pi r^2\\SA = 4 \pi (13)^2\\SA = 4 \pi *169\\SA = 2122.64$

Without multiplying 3.14 for
$\pi$ , the answer is

$SA = 169*4 \ pi\\SA = 676 \pi$

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