Because 1 * 21 = 3 * 7 ( 21 = 21 ) , 1/3&7/21 form a proportion.
Answer:
33.75
Step-by-step explanation:
https://study.com/academy/answer/a-vertical-mast-is-on-top-of-the-building-and-is-positioned-6-from-the-edge-of-the-building-the-mast-casts-a-90-shadow-from-the-front-of-the-building-another-building-24-tall-casts-a-shadow-64.html
A^2 + b^2 = c^2
9^2 + 12^2= c^2
81 + 144 = 225
C= 15
The answer is 15 yards.
