Answer:91.5
Step-by-step explanation:i just did it and thats the answer it said was correct hope this helped:)
C) 36 cubic feet
to find volume, it is length x width x height
so, 3 x 6 x 2 =36
M<S = 1/2(80-40)
m<S = 40/2
m<S = 20
answer is A. 20
Θ
=
arcsin
(
.7
4.2
)
≈
10
∘
Explanation:
We view the ramp as a right triangle. The hypotenuse is 4.2 and the vertical side .7, which is opposite the angle
θ
we seek.
sin
θ
=
.7
4.2
=
1
6
I'm going to finish the problem but I'll note if we were actually building the ramp we don't need to know the angle; this sine is sufficient.
θ
=
arcsin
(
1
6
)
θ
≈
10
∘
which I think is a pretty steep ramp for a wheelchair.
There will be another inverse sine that is the supplementary angle, around
170
∘
, but we can rule that out as a value for a ramp wedge angle.