Question 26214
Let width be x metres


so, length is "9 metres more than twice the width" --> 9+2x


So, perimeter is x + x + (9+2x) + (9+2x) = 174
6x + 18 = 174
6x = 156
x = 156/6
x = 26m


width = 26m
length is therefore 9+2(26) --> 9+52 --> 61m


jon.