Question

What is AB to the nearest meter

Answer 1

15m

Explanation:

So make this simpler, imagine two triangles the small one with dimensions 5,4,5 and the larger one with dimensions 15,12,AB.

To find the distance of AB we can use the common ration between the similar triangles.

r = common ratio

AB = 5r

we know that r = 3, because of the other side lengths

5r = 15

and 4r = 12,

so AB = 5r

and if r = 3 then AB =15

Answer 2

C. 15

Explanation:

Small triangle is similar to larger one so we can use the similarity ratio to solve the question:

CE/CA = DE/AB

4/12 = 5/AB cross multiply expressions

4AB = 60 divide both sides by 4

AB = 15