Answer:
BH=10.44
Step-by-step explanation:
Formula: c^2 = a^2 + b^2
solution:
BH^2™= OB^2 + OH^2
BH = √OB^2 + OH^2
BH = √10^2 + 3^2
BH = √100 + 9
BH = √109
BH = 10.44