Could someone help me with this? Could you also give a step by step explanation? ;-;

Answer:
ok for this we have to multiple the sides of the presents
10.5*16=168
34*23=782
7*7=49
now we add then together
49+782+168=999
so the stuff covers a area of 999 square cm
please give brainlest since this took a while
Answer:
1272 cm
Step-by-step explanation:
Multiply: 10.5*16=168
34*23=782
7*7=49
21*13=273
Add: 168+782+49+273=1272
Plug in units: 1272 cm