Friday

August 22, 2014

August 22, 2014

Posted by **Anonymous** on Wednesday, January 11, 2012 at 7:50pm.

I don't get how the answer is square root 180, Ryan?

- Geometry -
**Steve**, Thursday, January 12, 2012 at 5:28amActually, it's sqrt(180) from the top of the pole to the tip of the shadow.

Using similar triangles, if the shadow is x feet long,

12/(3+x) = 6/x

12x = 18 + 6x

6x = 18

x = 3

so, the shadow is 3 feet long.

**Related Questions**

Geometry - Jonathan is 3 ft from a lamppost that is 12 ft high. The lamppost and...

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

geometry - a boy stands 1 meter away from a lamppost. he is 1.8 meters tall and ...

Algebra 2 - A lamppost casts a shadow that is 24 feet long. Tad, who is 6 feet ...

Math grade 9ish - Evan is 1.8 metres tall. He walks between two lampposts that ...

Calculus - A man 2m tall walks away from a lamppost whose light is 5m above the ...

math - a 9 foot street sign casts a 12 foot shadow. the lamppost next to it ...

Math - A 6ft. person casts a 4ft. shadow. Next to the person, a lamppost casts a...

algebra - A man is walking away from a lamppost with a light source h = 6 m ...

precalculus - A man is walking away from a lamppost with a light source h = 6 m ...