Answer:
72
Step-by-step explanation:
you take 85 * 9
85 = # of seats
9 = # of buses
then you get 765
next, you take 765 - 693
765 = # of seats
693 = # people who bought tickets for a trip
finally you get 72
72 = # of empty seats
sin ( 11π / 8 ) = sin ( π + 3 π/ 8 ) =
= - sin ( 3π/8 ) =
= - sin ( 3π/4 / 2 ) =
You can use ur ruler the ruler that's in half
200.96cm^2 base area
Eq of circle area = πr^2
= 3.14 x 8^2
3.14 x 64
200.96cm^2
.
15 - -6 = 21. 21 points!