Answer:
1,570
Step-by-step explanation:
10×2=20
20×3=60
30×5=150
40×7=280
50×4=250
60×3=180
70×8=630
Now,
20+60+150+ 280 +250+ 280+ 630=1,570
this is the answer
The answer is 9
9 times 2 = 18
9 times 5 = 45
Just add the two bases plus the lateral area. so it would be 706.5+706.5+471.