The shape of a garden is rectangular in the middle and semi circular at the ends as shown in the diagram.

Area of the garden = sum of areas two semicircular shapes + area of rectangle

=  × (3.5)² + 13 × 7

= 38.5 + 91

= 129.5 m²

And perimeter = 2 π r + 2[l + b]

= 2 × × 3.5 + 2[13 + 7]

= 22 + 40

= 62 m