Começando com um quadrado de 1 cm de lado, formamos uma sequência de figuras,
como na ilustração. Cada figura, a partir da
segunda, é formada unindo-se três cópias da
anterior. Os contornos destacados das quatro
primeiras figuras medem, respectivamente,
4 cm, 8 cm, 20 cm e 56 cm. Quanto mede o
contorno da figura 6?

i really dont know

step-by-step explanation:

answer: finding the extract measurements and knowing the points

step-by-step explanation:

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.

what