Choose a number from 11 to 19 write a number and number word use word and pictures to show how many tens ones

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.

this may not be at all, but i use the same website you're using for school, and if i'm stuck doing one of these i try to look for it on the section.