Thursday

October 23, 2014

October 23, 2014

Posted by **sushmitha** on Saturday, December 3, 2011 at 9:35pm.

How tall is the streetlight?

- algebra -
**MathMate**, Sunday, December 4, 2011 at 12:54pmDraw a little sketch to convince yourself that the shadow of the light is 12'+ 5'=17'

Use proportions and cross product:

6.2 ft : 5 ft shadow

? ft : 17 ft shadow

height of light

= 6.2*17/5

= 21.08'

**Answer this Question**

**Related Questions**

College Algebra - If a person is 66 inches tall is standing 15 feet away from a ...

trig - A woman that is 5'4" stands 15 ft from a streetlight and casts a four-...

math - A telephone pole casts a shadow 16 feet long at the same time that a man ...

algebra - I need help figuring this out. If an object 3.9 feet tall casts a ...

algebra - if a 6-foot -tall man casts a shadow that is 13 feet long, how tall is...

Math...I think... - A building casts a shadow 54 feet long at the same time a 6 ...

math - a man who is 5 feet tall stands 15 feet from a lamppost that is 27 feet ...

Math Urgent help please - A lamppost casts a shadow of a man who is standing 15 ...

math - A man is six feet tall and casts a shadow 4 feet long. At the same time a...

Math - A flagpole is 20 feet tall and, in the afternoon, casts a shadow of 30 ...