Question

Find the unknown length in each pair of the similar figure. Must show work.

1. A mailbox that is 4 feet tall casts a shadow that is 12 feet long. A street lamp across the street is 10 feet tall. Use indirect measurement to find the length.

Answer 1

\[\frac{ 4 }{ 12 }=\frac{ 10 }{ x }\]

Cross Multiply

\[x=\frac{ 12*10 }{ 4 }\]

\[x=\frac{ 120 }{ 4 }\]

\[x=? feet\]