Question

A flagpole is 20 feet tall and its shadow is 8 feet long. A nearby building has a shadow 31 feet long. How tall is the building?

Answer 1

77.5 feet.

Explanation:

The shadow is proportionate to the height of the building.

20 divided by 8 is 2.5.

The height is 2.5 times the shadow length.

2.5 times 31 is 77.5 feet tall.