A building 84 ft high casts a 231-ft shadow. Sarah casts an 11-ft shadow. The triangle formed by the building and its shadow is similar to the triangle formed by Sarah and her shadow. How tall is Sarah?

Question

2867 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-06-11T03:01:37

Sarah is $3.86 ft$ .

This is a proportion question.

$81/231=x/11$

You cross multiple and get:

$891=231x$

Divide by 231:

$891/231=cancel(231x)/cancel231$

$x=3.86$