Answer:
19 x 12 1/2 x 4 1/2 = 1068 3/4 cubic meters
Step-by-step explanation:
don't forget the units.
Answer:i just need points sorry
Step-by-step explanation:

Using cross multiplication:

Convert a mixed number to a fraction:
We know that
[surface area]=2*[area of the base]+[perimeter of the base]*height
area of the base=15*13----> 195 in²
perimeter of the base=2*[15+13]----> 56 in
height=7 in
so
[surface area]=2*[195]+[56]*7-----> 782 in²
the answer is
782 in²