What is the minimum length of a wheelchair ramp, if it must rise a height of 1.3 m at a maximum angle of 9.4° above the horizontal?
0.21 m
7.85 m
7.96 m
1.32 m
To find the minimum length of the wheelchair ramp, we can use the formula:
Length = Height / sin(angle)
Plugging in the given values, we have:
Length = 1.3 m / sin(9.4°)
Using a calculator, we find that sin(9.4°) is approximately 0.1621.
So, the length of the wheelchair ramp is:
Length = 1.3 m / 0.1621 ≈ 7.9994 m
Rounded to two decimal places, the minimum length of the wheelchair ramp is 7.96 m.
Therefore, the correct answer is 7.96 m.