# Algebra

posted by .

A 12ft tall building casts a shadow. The distance from the top of the building to the tip of the shadow is 18 ft

. Find the length of the shadow.

• Algebra -

This sounds like a job for Pythagoras.

12^2 + b^2 = 18^2

144 + b^2 = 324

b^2 = 180

b = 13.4

## Similar Questions

1. ### Math 9

A 6 m flagpole casts a 5 m shadow at the same time of the day as a building casts a 28m shadow. How tall is the building?
2. ### Pre-algebra

A pole that is 3.1m tall casts a shadow that is 1.64m long. At the same time, a nearby building casts a shadow that is 50.25m long. How tall is the building?
3. ### math

a building casts a 25 foot shadow on a sunny day. If the angle of elevation from the tip of the shadow to the top of the building is 65 degrees, what is the height of the building to the nearest tenth of a foot?
4. ### prealgebra

a 12ft building casts a shadow. The distance from the top of the building to the tip of the shadow is 19ft. Find the length of the shadow.
5. ### math

The sun hits a building of unknown height so that the building casts a shadow of 517 feet. If the angle of elevation from the tip of the shadow to the sun is 16 degrees, how tall is the building?
6. ### Geometry

A building casts a shadow that is 250 ft long. The angle of elevation from the tip of the shadow to the top of the building is 43°. Find the height of the building to the nearest foot.
7. ### Algebra

The length of a shadow of a building is 27 meters. The distance from the top of the building to the tip of the shadow is 38 meters. what is the height of the building?
8. ### Algebra

The length of shadow of a building is 28m. The distance from the top of the building to the tip of the shadow is 36m. Find the height of the building
9. ### geometry

A vertical mast is on top of building and is positioned 6' from edge of building. The mast casts a 90' shadow from front of building. Another building 24' tall casts a shadow 64'. What is the height of the mast?
10. ### math

A vertical mast is on top of building and is positioned 6 ft from the front edge. The mast casts a shadow perpendicular to the front of the building and the tip of the shadow is 90 ft from the front of the building. At the same time, …

More Similar Questions