Given that the garden is rectangular and a line of roses form the diagonal 18.4 m long, we required to calculate the length of the perpendicular side. Here we shall use the Pythagorean theorem. c²=a²+b² where c is the hypotenuse, a and b are the legs. from the information given: c=18.4 m a=13 m plugging this into our expression we get: 18.4²=13²+b² next we solve for the value of b b²=18.4²-13² b²=338.56-169 b²=169.56 b=√169.56 b=13.0215 hence the length to the nearest tenth of a meter will be approximately 13.0 m
