112
160 divided by 10 equals 16
16 x 3 =48
160- 48= 112
That should be right.
Answer:
178
Step-by-step explanation:
Use Pythagorean Theorem to find the Hypotenuse
30^2+72^2=78^2
Use perimeter formula
a+b+c
38+72+30
He's using the graduated cylinder method. I think the volume might be between 15 and 20. (It's kind of not obvious...)
You have to first make like terms
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**you want the denominator to be 21