Respuesta :

A=bh and since the garden is 2 1/2 by 2 and the trench+garden= 3 1/2 by 3 the trench would be 1 by 1. So A=1x1 = 1

Answer:11/2 m sq

Step-by-step explanation:

Area of the garden =L•W

2 1/2•2=

5/2•2= 5 m sq

Area of the garden & trench =L•W

3 1/2•3 =

7/2•3 =

7•3/2=

21/2 m sq

21/2-5 =

21/2-10/2=

21-10/2=

11/2

The area of the trench is 11/2 m sq