<span> For this case we have the following number:
710200
We are going to decompose this number as the sum of three numbers:
</span>

<span> Let's now write each number:
70000: seven hundred thousand
10000: ten thousand
200: two hundred
Therefore, the complete expression is:
Seven hundred ten thousand two hundred
Answer: Seven hundred ten thousand two hundred</span>
Well 392 = 300 (Hundred), 90 (Tens), 2 (Ones)
<span>The product of 7 and 0.04 is 0.28=true</span>
The volume of the original cylinder is
... V = π·r²·h
For r=1 and h=1, this is
... V = π·1²·1 = π
For the new cylinder, the volume is 1.089 times that amount.
... V = 1.089π = π·1.1²·(1-k)
... 1.089/1.21 = 1-k
... k = 1 - 1.089/1.21 = 1 - 0.9 = 0.1 = 10%
The appropriate choice is (B) 10.