Answer: 450
Step-by-step explanation:
Answer:
450
90
6+6=12
12+8=20
20+10=30
30+12=42
42+14=56
56+16+18=90
I think the answer is B 23,345
surface area=4 *x²+2 x²=6x²=6 ×5²=150 sq. in.
