Question

I need help :(

Answer 1

What's your question?

Answer 2

Just a second, I had to attach a file

Answer 3

Set up a proportion.

\(\sf \dfrac{54}{729} = \dfrac{18}{x}\)

Cross multiply.

54 * x = ?
729 * 18 = ?

Answer 4

54 is the side length of the bigger triangle, and 729 is the area of the bigger triangle.

18 is the side length of the smaller triangle, and 'x' represents the area of the smaller triangle.

Answer 5

729 * 18 = 13122.... And then 54 * x is what I still need to find.

Answer 6

?

Answer 7

54 * x is the same as 54x

Answer 8

So we have:

\(\sf 13122 = 54x\)

Divide 54 to both sides.

Answer 9

but that isnt an answer choice @iGreen

Answer 10

Yeah..

Answer 11

Oh, hold on.

Answer 12

I only have
10.5cm²
31.5 cm²
67 cm²
81 cm²

Answer 13

okay so first we need to find the similarity ratio between the sides

Answer 14

so 18/54 = ??

Answer 15

18 to 54 = 1 : 3

Answer 16

yes so now we convert dimensions since we are going from side length to area which are two different dimensions
so we square (1/3)

Answer 17

Okay