Given radius=15 inches
Perimeter=circumference of circle
Circumference=2 pi r
=pi=22/7 or 3.14
=2*3.14*15=94.2
Rounded off=100
find total area by multiplying 350' x 200' = 70,00 sq ft
area of one block, multiply 25' x 25' = 625 sq ft = area for one Security guard
divide area for one security guard into total area of facility 70,000 / 625 =
112 security guards
find how many people for each block = 70,000 / 625 = 112 blocks
12,000 people divided by 112 blocks = 12,000 / 112 = 107.14 rounded to nearest 10 = 110 people per block
Hi there!
The angle of this problem appears to be 125° which indeed would make this an obtuse angle. The reason this is 125° and not 65° is that the angle in the picture is reversed so the line on the bottom is not pointing toward zero like a traditional angle, so it would be 125° instead.
-ASIAX <span>Frequent Answerer</span>
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