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The answer depends on the angle of the sun. That will depend on the time of day, latitude and the season.

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8y ago
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Q: How long is the shadow cast by a 21 foot tree?
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Related questions

How high is a tree that cast a 24-foot shadow at the same time a 8-foot pole casts a shadow which is 11-foot long?

17.45 feet.


A tree cast a shodow 20 feet long a 5 foot tall boy stands in the shadow so that the end of his shadow lines up with the tree his shadow is 6 feet long how tall is the tree?

60


If a tree 17 feet tall casts a shadow 12 feet long how high is a building that casts a shadow 19 feet long?

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.


A tree cast a 24-foot shadow at the same time a fence post 5 feet high cast a 4-foot shadow how tall is the tree?

It works out as 30 feet in height


How high is a tree that casts a 21 foot shadow at the same time a 6.5 foot man cast a 5 foot shadow?

27.3 feet


When a tree cast a 20 foot shadow a man 6 feet tall casts a 3 foot shadow how tall is the tree?

The man is twice as high as his shadow. Therefore, the tree must also be twice as high as its shadow, which would make the tree 40 feet tall.


A 32 foot tall tree casts a shadow that is 48 feet long. How far away from the tree is a 6 foot tall person who is standing in the shadow of the tree as shown in the diagram?

39


Thomas happened to notice that at 4 PM on his uncle's farm a fence post that was 5 feet tall cast a 3 foot shadow He also noticed that a nearby tree cast a 12 foot shadow How tall is the tree?

The tree was 20 feet tall.


How high is a tree that casts a 27 foot shadow at the same time a 5 foot man cast a 13 foot shadow?

10.'384615' (recurring decimals) feet


Thomas happened to notice that at 4PM on his uncles farm a fence post that was 5 feet tall cast a 2 foot shadow He also noticed that a nearby tree cast a 10 foot shadow How tall is the tree?

25 ft


A tree is 18 feet tall and casts a shadow 6 feet long A nearby sign casts a 3 foot shadow What is the height of the sign?

A 1 foot shadow I think.


A vertical pole 5 feet long casts a shadow of 2 feet if at the same time a nearby tree casts a shadow of 10 feet how tall is the tree?

The tree is 25 feet tall. A 5 foot pole cast a 2 foot shadow. This means that the sun angle causes the shadow to be 2/5 the length of the object casting it. The tree's shadow is 10 feet tall. Multiply 10 feet by 5/2 (inverting the fraction because we're going the other way) and we get 25 feet.