Answer:
180
Step-by-step explanation: The exterior angles sum to 360 and there are 21
Given,
Rate of free fall = 216 km/h
Solution,
km/h to m/s is converted as follows :

So, the rate of fall is 60 m/s.
If t = 20 s
Assume, initial velocity = 0
It will move under the action of gravity.
Using equation of motion,

Hence, this is all for the solution.
<span><span><span><span><span><span><span><span>here ya go 14.13</span></span><span><span /></span><span><span><span><span>m</span></span></span><span><span><span>2
</span></span></span></span></span></span></span></span></span></span><span>A≈14.13m2</span>
C the third one
Step by step