Question

A building 64 ft high casts a 288-ft shadow. Sarah casts an 18-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?
A. 5 ft

B. 3 ft

C. 6 ft

D. 4 ft

Answer 1

s/18=64/288  multiply both sides by 18

s=1152/288

s=4 ft

So Sarah is four feet tall.