Question

4. What is the area of the square below?

16.97 cm²
72 cm²
144 cm²
288 cm²

Answer 1

C ?

Answer 2

Have you learned about special triangles?

Answer 3

Nope cause I don't know what that is.

Answer 4

What are you learning about

Answer 5

notice that the only perfect square root in the options is 144 !!

so you are correct its C great job!

Answer 6

I got a different answer.

Answer 7

I'm really not sure it's all so confuseing so I just slide alongandtry my best. What ddi you get B?

Answer 8

I got D.

Answer 9

How did you get D??

Answer 10

@Directrix

Answer 11

http://www.regentsprep.org/Regents/math/algtrig/ATT2/Ltri45.htm

Answer 12

The diagonals of a square are congruent.
Because a square is a parallelogram, the diagonals bisect each other.

So, each diagonal of the square shown is of length 24.

Theorem: The area of a square can be found by taking one-half the product of its diagonals. So what is that result?

Answer 13

So is it not C '=?

Answer 14

Using special triangles, you can solve the bottom leg of the triangle as 12/sqrt(2) or 6 * sqrt (2). 6 sqrt 2 * 2 (because we found half the distance of a side) is 12 sqrt 2. 12 sqrt 2 * 12 sqrt 2 = ?

Answer 15

Directrix is also correct

Answer 16

It isn't C

Answer 17

Do you understand how to solve this?

Answer 18

No i'm sadly not catching on fast so i'm guessing it was D huh

Answer 19

Ok, there are two ways i can explain it: Directrix's way or my way, which way do you choose?

Answer 20

(His way is easier)

Answer 21

im saying so 12 * 12 = 144 12 * 12 = 144 144+144= 288

Answer 22

288