What is the amplitude and wavelength of the wave?

Answer:
The amplitude is [tex]A = 5 \ cm[/tex]
The wavelength is [tex]\lambda =30 \ m[/tex]
Explanation:
From the question we see that
The maximum value is [tex]b = 5 \ cm[/tex]
The minimum value is [tex]a = -5 \ cm[/tex]
Generally the amplitude is mathematically represented as
[tex]A = \frac{1}{ 2} * [b - a ][/tex]
=> [tex]A = \frac{1}{ 2} * [5 -(- 5) ][/tex]
=> [tex]A = 5 \ cm[/tex]
Gnerally the wavelength is the distance between the to adjacent trough and from the diagram it is
[tex]\lambda =[ 40 + [ \frac{45- 40 }{2} ]] -[ 10 + [\frac{15- 10 }{2} ] ][/tex]
=> [tex]\lambda =30 \ m[/tex]