Step-by-step explanation:
I) 9+9+9+9=36
Ii)radius is 4.5 L=2piR= 2pi(4.5)= 9pi
Iii) A=piR^2= pi(4.5)^2 = 20.5pi
IV) 9×9 =81
V) 81-20.5pi = 16.597
30 students could of been taking both courses and 60 with no course
Answer:
32 is 40% of 80
Step-by-step explanation:
i just asked my alexa lol ._.
Answer:
6
Step-by-step explanation:
100/18=5 1/2
18*6=108
10.50/5=2.10
2.10*4=8.40
She used to earn $8.50/hr