Answer:
The answer is 54 cubes.
Step-by-step explanation:
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The complete question in the attached figure
we know that
tan R°=opposite side angle R/adjacent side angle R
opposite side angle R=72 units
adjacent side angle R=25 units
so
tan R°=72/25
R=arc tan (72/25)---------> R=70.85°-------> R=70.9°
the answer is R=70.9°
Since each ton equals 2000 pounds you add 2000+2000+500 (because of the half) and it equals 4,500 pounds