Respuesta :

#3.
 √18²-5.7²    Second Choice

#4
l²=5²+4² = 25+16 = = 41
l=√41
l= 6.4

Second Choice

#5 Only A --- First choice

#7 6 ----- Third choice

#8 V= [tex] \pi r^2(h)= \pi 10^2(3) = 314(3)=[/tex]942  units³ ---Second choice