Answer:
4.58 ft
Step-by-step explanation:
Pythagoras Theorem:
a^2 +b^2 = c^2
b^2 = c^2 - a^
b^2 =11^2 - 10^2
b^2 = 121 - 100
b^2= 21
the heigh = √21 = 4.58
Answer: 4.58 ft
