find the area of the face DGHA in this cuboid 7cm , 9cm , 4cm please help

Answer:
322cm
Step-by-step explanation:
Equation: 2h(l+w)
length- 9cm; width- 4cm; height- 7cm
2*7(9+4)
Add within the parenthesis first
2*7(23)
Multiply 7 with 23
2(161)
Multiply
322
This is what I got. Good luck!