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Use Pythagoras! 12 square feet is the answer hope this helps!
Answer:
8b is 220
Step-by-step explanation:
it might be 220 because we already know that from o to b is 140 degrees. We know that a full circle is 360, so take 140 away from 360, and you get 220.
360-140=220 degrees
Im not sure about the other questions but i hope this helps :)
Answer:

Step-by-step explanation:
we are given that
line passes through (2,-1) and (6,4)
Firstly, we will find equation of line
First point is (2,-1)
x1=2, y1=-1
second point is (6,4)
x2=6 , y2=4
now, we can find slope

now, we can plug values


now, we can use point slope form of line

now, we can plug values

since, we have to solve for x from (x,0)
so, we can set y=0
and then we can solve for x





The last one is the answer