Respuesta :

apologiabiology
for a sphere, remember that the surface area is roughly 4 times the area of a circle with same radius

so
SA=4pir^2
r=8.4
we are done'
SA=4pi8.4^2
SA=4pi70.56
SA=282.24pi
aprox pi=3.14
SA=886.2336 in^2

answer is last one

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