ladya1613
24.04.2020 •
Mathematics
An observation tower is 75 m high. A support wire is attached to the tower 20 m from
the top. If the wire that attaches to the ground is 80 m long, how far is it from the tower?
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Ответ:
57.06 unit^2
Step-by-step explanation:
find the area of the rectangle = 12*12 = 144 unit^2
the area of the circle = pi*r^2 = 3.14*8^2 = 201.06 unit^2 (rounded to the nearest hundredth)
then the "shaded area" is the difference
201.06 - 144 = 57.06 unit^2