The time taken by the acorn to fall 1.16 seconds
Answer:
CSA of cylinder= 2πr(h+r)
=2 π×9 (21)
= 378π cm²
now
CSA of hole= 2πr
12π cm²
<h3>
Answer: Choice C</h3>
Work Shown:
In the third step, I used the rule that 
. You subtract the exponents when dividing exponents of the same base.
After that, I used the rule 
which is the same as saying 
to end up with choice C as the answer.
Answer:
do you have pictures that I can see
