Answer: 198m^2; the first option is correct
Step-by-step explanation:
Surface area of a rectangular prism =A=2(wl+hl+hw)
Where w is width, given as 6m
h is the height, given as 9m
l is the length, given as 3m
Slot the values into the formula;
A= 2 ( (6×3) + (9×3) + (9×6) )
A= 2 ( 18 + 27 + 54)
A= 2 (99).......multiply 2 by 99
A= 2 x 99 = 198m^2
