tashakelly42
24.06.2019 •
Mathematics
The diagram show a closed structure in the shape of a half cylinder. the diameter of each base is 16 feet. the length of the structure is 50 feet. find the surface area of the entire structure.
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Ответ:
The surface area is
Step-by-step explanation:
we know that
The surface area of the half cylinder is equal to
where
B is the area of the half circle
P is the perimeter of the half circle plus the diameter of circle
L is the length of the structure
Find the area B
The area of the half circle is
we have
-----> the radius is half the diameter
substitute
Find the value of P (the perimeter of the half circle plus the diameter of circle)
we have
substitute
Find the surface area
substitute
see the attached figure to better understand the problem
Ответ: