Question

http://prntscr.com/azy7nd
I'm having issues with this one

Answer 1

Haha, I was just about to tag you.

Answer 2

ok very nice i m here

so can you calculi the length of bigger and smaller square sides ?

Answer 3

remember this given length of half diagonal make an angle of 90 degree - ok. ?

Answer 4

do you understand me ?

Answer 5

just use pythagora first for the length of bigger square edge and after this for the smaller square edge - ok. ?

Answer 6

So, I do 4^2+9^2=x^2?

@jhonyy9

Answer 7

but doesn't the Pythagorean theorem not give the are?

Answer 8

for the length of biger square edge there is x the length of edge so than will be

9^2 +9^2 = x^2 bc x mean the hypotenuse ok. ?

Answer 9

and so make in case of smaller square too - ok. ?

Answer 10

so you have got it ?

Answer 11

Wait, so I'm a bit confused. How is this going to help us find the area?

Also, why are we doing 9^2+9^2?

Answer 12

ok first there is the biger square with half diagonal length of 9 - yes ?

Answer 13

Yep

Answer 14

so how you calculi the x ?

Answer 15

just use pythagora - not ?

Answer 16

so do you see it now ?

Answer 17

than you get the x you can calculi easy the area of biger square - yes ?

Answer 18

and so in this way you need calculi the length of edge of smaller square and so calculi area of smaler square

Answer 19

Ah! I see. Alright.

Answer 20

than you have got these areas so just subtract the smaler area from biger and will get area of shaded region - right ?

Answer 21

How did I find area of smaller square?

Answer 22

first you need calculi the length of edge of smaler square exactly same with how you have did in case of biger square - ok. ?

Answer 23

have got it ?

Answer 24

write

4^2 +4^2 = y^2 let be the edge y in this case ok. ?

Answer 25

Oh! I understand now. Alright! I get it. : )

Answer 26

ok so was my pleasure

good luck

bye bye

Answer 27

I got 193.9999999999999990559 as the answer

Is this correct?

@jhonyy9

Answer 28

@mww

I just need someone to confirm I got the right answer for this one

Answer 29

um you should actually get a whole number in this situation. Remember Pythagoras gives you a squared answer for a side. BUT in area of square, you want your answer squared. So you don't need to change anything: