Your answer would be A, B, and C.
to find the hypotenuse (or the ramp in question 4) you can use the equation

with a and b being the 3 feet and 9 feet and c being the unknown (ramp).
So if you plug 3 and 9 into the equation, it looks like this.

then square them.

simplify.

take the square root of both sides.

is approx. 9.5 so the answer would be H.
Answer:
C: √768
Step-by-step explanation:
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Answer:
R
Step-by-step explanation:
E is congruent to R because of angle stuff
Answer: 4 1/2
Step-by-step explanation: