Respuesta :

Given the length of the park = L = 50m

breadth of the park = d = 30 m

for a rectangular field , diagonal d or length of the wall :

d^2 = l^2 +b^2

d^2 = 50 ^2 + 30^2

d^2 = 2500 +900

d^2 = 3400

d = sqr3400

d = 58.30

This means that the length of the wall is 58.3m