That is an impossible question it could be any size the length of the shadow is dictated by the angle if the light source.
15 feet high
To determine the height of the tree based on the shadow length, we can use the concept of similar triangles. If the tree casts a shadow of 1 foot while a 1-foot pole also casts a shadow of 1 foot, then the height of the tree is the same as the height of the pole. Thus, the tree is also 1 foot tall.
x/85 = 6/17 30 ft.
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15 feet high
121.3yd
63 feet
A 1 foot shadow I think.
If a 27 ft tall pole casts an 18 foot shadow, a 63 ft tall pole casts an x foot shadow.Put 27/18 and 63/x.Cross multiply, get 27x=1134Divide by 27 on both sides, a 63 foot tall pole casts a 42 foot long shadow.
x/85 = 6/17 30 ft.
To cast a 19 foot shadow the building would have to be 26.91 feet tall. Each foot of building/tree casts 8.47 inches of shadow.
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4 is to 6 as 5 is to X. 4/6 = 5/X. X = 7.5 feet.
27.3 feet
48