Question

(This ramp is then turned around and placed
against another wall opposite to the first
wall (see figure). In the new position, the top
of the ramp is 10 m above the bottom of
the second wall. What is the distance of the
bottom of the ramp, from the bottom of the
wall in the second position?​

Answer 1

Answer:

Answer is 7.5m

Step-by-step explanation:

By pythagora's theorem, we have;

DO²=DC²+CO²

=>12.5²(i.e length of the ramp from the first position)=10²+CO²

=>156.25=100+CO²

=>156.25-100=CO²

=>56.25=CO²

=>7.5²(square root of 56.25)=CO

Therefore,CO=7.5