The answer is A) to protect seeds and aid in its dispersal.
        
             
        
        
        
Answer:
legth of life is the answer 
 
        
             
        
        
        
The velocity (speed) of a sound wave (any wave in fact) is related to its frequency and wavelength by the equation . This is easy to remember since it's a distance divided by a time because frequency is the inverse of the period.
Since for sound traveling through the given solid object we have that  and , the speed of sound will be:       
this is what i looked up and got
 
        
             
        
        
        
Answer:
68 1/2 foot length
Or 22 5/6 yards.
Explanation:
The yard length of the part of the goal post
The base (10 foot)
The crossbar (18 1/2 )
And two arms (20 foot each)
Let's sum up the total yards
=(10 + 18 1/2 + 20 +20) foot
= 68 1/2 foot length 
Or 22 5/6 yards.