Sam, Rob and Jim all leave the "START" location at the same time. Sam follows Route A, Rob follows Route B, and Jim follows Route C so they each arrive at the same "END" location. Each grid square represents 100 m distance.

answer is a

step-by-step explanation:

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.

there are 14 dogs at the park now