Answer:
x m tall           10 m tall
--------------- Â Â Â Â Â = ------------
140 m shadow      4 m shadow
The height of the Stratosphere Tower is 350 m
Step-by-step explanation:
We can use proportions to solve this problem. Â Put the height of the object over the length of the shadow.
x m tall           10 m tall
--------------- Â Â Â Â Â = ------------
140 m shadow      4 m shadow
Using cross products
x*4 = 10 * 140
4x =1400
Divide by 4
4x/4 = 1400/4
x =350
The height of the Stratosphere Tower is 350 m