Question

PLEASE HELP ME?!?!?!


The figure shows a right triangle AEB on a rectangle CBED.



What is the length of side AD?

69.28 cm

45.32 cm

81.96 cm

94.38 cm

Answer 1

you need \(AE+ED\) so you need both of those

Answer 2

Well CBD is a 30-60-90 triangle so you can find BC. Since it is a rectangle, DE is the same length.

Answer 3

the triangle \(ABE\) is a 30 - 60 - 90 triangle with long side 30
ratios of a 30 - 60 - 90 right triangle are \(1:\sqrt{3}:2\) so since the long side \(BE=30\) you know the short side \(AE=\frac{30}{\sqrt{3}}\)

Answer 4

BED is also a 30-60-90 triangle so if you know DE you can find BE and use it to find AE

Answer 5

So the answer is C... ? right ?

Answer 6

what mertsj said.
we have just found \(AE=\frac{30}{\sqrt{3}}\) now repeat the process for the larger triangle \(BED\)

Answer 7

So the answer is C..? yes? or no...?

Answer 8

Hang on.

Answer 9

Not what I got.

Answer 10

waiiiiiit..... 69.28 . right ?

Answer 11

That's what I got.

Answer 12

Okaay. thankyouu

Answer 13

yw