Answer:

Step-by-step explanation:
can stay untouched, but
has to be changed to
. Now that they have they have the same denominator, you can add them.
, which can be simplified, which is
.
Answer:
45
Step-by-step explanation:
i guesss
You would multiply 12*1.5, 8*1.5 and 6*1.5 to get you new dimensions.
Then you would just simply calculate for surface area as normal,
Answer:
S = 972 m<span>2</span>