Answer:
318 mm2
Step-by-step explanation:
Please see the step-by-step solution in the picture attached below.
Hope this answer can help you. Have a nice day!
If they sold 89 calendars over 4 weeks, the 'equation' would look like (x = average calendars sold over 4 weeks):

If you solve it, you get:

Which is equal to
22.25. Hope this helps!
5) Obtuse triangle because the top angle is more than 90 degrees
I think it would require 100 workers since 1 worker digs up 1 yard.
Hope this helps.