The width of a garden, is the half of the length. The circumference is 39 meters. At a distance of 2 meters from all sides is applied a lawn in the middle. How many m² is the surface of the lawn?
+36923 First let's find the dimensions of the garden l = length l/2 = width
perimeter = 39 = l + l/2 + l + l/2 results in l = 13 l/2 = 6.5 meters
The 'lawn' in the middle is 2+2 = 4 meters less in dimensions or 9 x 2.5 = 22.5 m^2
