%error=5%, measured height = 5.98m
let the actual height = y
error=x - 5.98 (since 'y' is more than 5.98)
%error = erroractualheight×100%
5% = y−5.98y×100%
5100=y−5.98y
5y = 100(y - 5.98)
5y = 100y - 598
5y - 100y = - 598
-95y = - 598
y = −598−95
y = 6.29m( to 2 d.p).