R = rate of rise of Sea level at The Battery, New York = 2.84 x 10⁻³ m/year
t = time period for which the sea level rise = 20 years
H = total rise in the level of Sea level at The Battery, New York in 20 years
Rise in the sea level can be given as
H =R t
inserting the above values in the equation
H = (2.84 x 10⁻³ m/year) (20 years)
H = 5.68 x 10⁻² m