Answer:
First, we need to convert the lengths of the run and rise to inches. 6 ft 8 in. is equal to 72 + 8 = 80 in. and 2 ft 9 in. is equal to 24 + 9 = 33 in.
The guidelines state that the ramp should have a maximum of 1 in. of rise for every 12 in. of run. So, if the ramp has a run of 80 in., the maximum rise should be 80/12 = 6.67 in.
The ramp at the left has a rise of 33 in., which is greater than the maximum of 6.67 in. Therefore, the ramp does not meet the guidelines.
Is there anything else I can help you with?
Explanation: