2.

1. A 6-foot tall observer casts a 3.5-foot shadow

at the same time a silo casts a 49-foot shadow.

How tall is the silo?

Step-by-step explanation:

Given that a 6-foot tall observer casts a 3.5-foot shadow  at the same time a silo casts a 49-foot shadow.

We can solve this by setting up a ratio comparing the height of the Silo to the height of the observer and shadow of the Silo to the shadow of the observer.

Let  be height of the Silo

 shadow of the Silo

height of the observer

shadow of the observer

Now we have

Substitute the values we get

x = 84ft

Step-by-step explanation:

6ft/3.5ft = x/49ft

3.5x = 6 x 49

3.5x = 294

3.5x ÷ 3.5 = 294 ÷ 3.5

6ft/3.5ft = 84ft/49ft

the square root of what number? if you add that, then someone will probably answer the question.