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lilpetals
17.11.2020 •
Mathematics
2 points
The diagram shows a triangular ramp leading up to the entrance of a
building. How long in feet is the vertical support shown in blue?
x ft
2 ft
6 ft
-24 ft
Your answer
Solved
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Ответ:
The area of the sector which is the white triangle adding the shaded region is 68.9/360*π*9.28^2=51.78005(rounding to 5th digit after decimal point for accuracy before we do final round for answer)
The area of the white triangle in the sector has area 1/2*9.28^2*sin(68.9)= 40.17223(rounding to 5 digits again for some accuracy.
Now we take out the white triangle from the sector.
51.78005-40.17223=11.60782
rounding to the nearest tenth we get 11.6 cm^2
Problem done!
Hope this helped and if you have any questions about my explanation just ask in the comment and I will answer.