What is the prime factorization of 21? Enter your answer as a product of prime numbers, like 2 x 3,
or as a single prime number, like 17.

3 and 7

Step-by-step explanation:

3*7

Step-by-step explanation:

Those numbers are both prime and equal 21.

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.

i can't see the picture : /