Question

REALLY REALLY REALLY REALLY NEEED HEEEEELP could anyone help me please


James is trying to determine the height of a building, so he uses a street sign as a reference. The street sign is 7 feet tall and casts a shadow of 4 feet. The two triangles formed in the picture above are similar.

If the building casts a shadow of 28 feet, what is the height of the building?
A.
16 feet
B.
49 feet
C.
112 feet
D.
53 feet

Answer 1

picture above --- where is ?

Answer 2

https://app38.studyisland.com/userfiles/87423ab1.png

Answer 3

can you drawing them ?

Answer 4

ok.

Answer 5

Use the tangent to find it
Since both triaangle are similar its angles are too. So
Tg@=7/4 and Tg@=h/28
7/4=h/28
Just solve that

Answer 6

but can using the rule of 3 simple

7 feet tall street sign ---- 4 feet shadow
x height building cast ---------- 24 feet shadow
----------------------------------------------

x = 24*7/4 = ?

Answer 7

sorry not 24 i have missed it will be there 28 - sorry

Answer 8

x=28*7/4 = ?

x= ?

Answer 9

The answer is the same

Answer 10

it equal 49 B.

Answer 11

49 ????? what ?

Answer 12

oh wait sorry not 49 hold on a sec

Answer 13

Is not?

Answer 14

49 is right but you need writing there again the unit of measure - yes ?

Answer 15

Ah ok

Answer 16

do you understand this way to solve it ?