shiny9362
01.12.2020 •
Mathematics
The Grand Canyon Skywalk at Eagle Point is a horseshoe shaped steel frame with a glass floor looking down to the Grand Canyon below. The Skywalk extends 70 feet over the canyon rim and is 10 feet wide. The walkway consists of a semicircle with a straight portion on each side as indicated in the diagram below. How many square feet of glass are needed to cover the Skywalk floor? (Round your final answer to 1 decimal place and any intermediate calculations to 2 decimal places. Be sure to include units.)
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Ответ:
It will be needed 864 square feet of glass to cover the Skywalk floor.
Step-by-step explanation: The figure below shows the area in question.
Area of a circle is given by
The walkway is a semicircle. Then, area will be:
The area that will be covered with glass is the area between the outer and the inner circles. So, area is
864
To cover the Skywalk floor is needed 864 of glass.
Ответ:
Hi
if " a" is negative then the line goes from up left corner to down right corner.
it's mean decreasing groth. value get more and more negative toward negative infinity as x is going upward to positive infinity.