Help pls I need you to match what goes where

The complete question is as below and diagram is also attached:

Elena’s backyard is in the shape of a rectangle. She created a triangular-shaped flower bed (shown as the shaded region) to plant flowers in. The area of the triangular flower bed is 125 square feet. The area of her backyard that does not include the flower bed is 575 square feet

The correct answer is 575 sq. m²

Step-by-step explanation:

The area of triangle = = = 125

The area of square = A = LW

                                = 35 × 20 = 700

Thus, the answer will be

= 700 - 125

= 525.