Question

6 foot tall person cast 2.5 foot long shadow at the same time that a buildind cast a 40 foot long shadow how tall is the buidling

Answer 1

.04

Explanation:

25/6.25=x/2

6.25X25/6.25=6.25 x X/2

2.5/3.25=3.125X3.125

25/3.125=.04

Answer 2

you need to do a proportion which would look like then use cross products.