What is the area, in square centimeters, of the isosceles trapezoid below? 5-3 cm
4.2 cm
13.5 cm

both triangles area:

4.2 x 8.2 = 34.44

you don’t need to divide by two cause there’s two triangles anyways.

also, you get 8.2 by subtracting the total length by the top length. (13.5-5.3)

rectangle:

4.2 x 5.3 = 22.26

the total area is 56.7cm squared

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.

ok then what happened.