2007-12-17 08:17:02 · 11 answers · asked by Boogie 2 in Science & Mathematics ➔ Mathematics
Use ratios:
Pole : pole shadow = Tree : tree shadow
8 ... x
-- = ---
4 .. 11
Cross multiply:
4x = 88
x = 88/4
x = 22
The tree is 22 feet tall.
(P.S. Notice the pole is twice as tall as its shadow and you should have the answer even quicker).
2007-12-17 08:20:39 · answer #1 · answered by Puzzling 7 · 1⤊ 0⤋
The item casts a shadow half as long as the object itself.
Therefore, the tree must be 22 feet (11 foot shadow x 2).
2007-12-17 08:19:57 · answer #2 · answered by nicknameyo 3 · 0⤊ 0⤋
They will be similar triangles. A pole casts a shadow half its size. The tree will cast a shadow half its size. So the tree is 22 ft tall. You could set up a proportion when the numbers are more complicated.
8/4 = t/11
t=22
2007-12-17 08:24:19 · answer #3 · answered by Anonymous · 1⤊ 0⤋
depends what time of the day we're talking and if the tree is placed next to the pole, in actual fact a tree can be but a few feet and cast a 12 foot shadow, so be more specific!
2016-05-24 09:39:44 · answer #4 · answered by ? 3 · 0⤊ 0⤋
I'd assume 22 feet, as the shadow from the pole is equal to half of it's height.
2007-12-17 08:19:46 · answer #5 · answered by Bushman 2 · 0⤊ 0⤋
22 feet
2007-12-17 08:19:50 · answer #6 · answered by Bill W 【ツ】 6 · 0⤊ 0⤋
One would assume 22 feet, but it all depends on the position of the sun.
2007-12-17 08:20:33 · answer #7 · answered by Anonymous · 0⤊ 0⤋
ratio's equal
8:4
2:1
now you say that shadow is 11 feet, so therefore times both by eleven= 22:11
so pole is 22feet.
2007-12-17 08:21:49 · answer #8 · answered by help 2 · 0⤊ 0⤋
A little over 5 feet.
2007-12-17 08:20:19 · answer #9 · answered by Anonymous · 0⤊ 3⤋
I'd have to go with 22 ft yes. Just a guess though lol. good luck.
2007-12-17 08:23:34 · answer #10 · answered by shadowsblight 2 · 0⤊ 0⤋