Answer:
7cm
Step-by-step explanation:
3cmx3cm=9cm
9cmx3.14=28.26
28.26/197.9=7 (plus a bunch of decimals!)
So 7cm is your height
It 72° because AB is parallel to CD
There is many ways to do this but i did it this way.
180-123.75= 56.25
56.25/5=11.25
=11.25
to answer this you need to do -5+14.3 to get you answer which would be
-5+14.3
9.3
so n=9.3
hope this helps