Answer:
378
Step-by-step explanation:
12 x 18=216
9 x 9= 81
81 x 2= 162
162 + 216 = 378
Answer: 1696.46
6 x 6 x 3.14 = 113.1
24 x 24 x 3.14 = 1809.56
113.1 - 1809.56
thus we have 1696.46
sorry had to edit some things instead of one 6 its 6 x 6 and same with 24