Answer:
c
Step-by-step explanation:
Surface area= 2(6x15)+2(7x15)+2(6x7)
=180+210+84
=474m
Volume=15x6x7
=630m^2
In this problem there might be a number that you need to add before the "( x 3)" then your answer will be 20 = 32 - 12 = 20
You normally use division what u do is u did if 24.99 by 2
You could make them have the same denominator, making it 7/10-5/10=2/10.
The answer is 2/10, or simplified, 1/5.