Hola, como esta ? yo know espanol
I hope this helps you
68,25=(9+12).h/2
2.68,25=21.h
136,5/21=h
h=6,5
Hello!
You have to find the area of the prism and the pyramid
rectangular prism is lwh
Put in the values you know
15 * 5 * 7 = 525
For a prism you use

Put in the values you know

Multiply
975/3
Divide
325
Add the values you know
325 + 525 = 850
The answer is D)

Hope this helps!
So what you do is theres 12 months so multiple that by 15 and get 180 then what you do is what time 80 equals 180 and thats your answer