a). (20 x 80) + (20 x 6) + (7 x 80) + (7 x 6)
Answer:
Step-by-step explanation:
V of a cone V=3.14* r^2*h/3
942=3.14*r^2*9/3
r^2=942/(3.14*3)=100
r=sqrt100=10
1/12. There are 12 possibilities, and only one number under 2.
It had to be B
because 6 is subtracted by the number n and the only one that has n-6/ 6-n is B
C because all you need to do is compare the 2 variables and then add the variables and the multiply it and then divide it. Then your golden.