How i do this step by step and with the answer

Hey there :)

This shape is a parallelogram ( That answers the last question, the type )

We know the area formula of a parallelogram:
A = c x h

We are given the:
c = 9.8 mm
h = 5.8 mm

Apply the formula:
A = 9.8 x 5.8
   = 56.84 mm²

We know the perimeter formula of a parallelogram:
P = 2 ( a + c )

We are given
a = 6.26 mm
c = 9.8 mm

Apply the formula:
P = 2 ( 6.26 + 9.8 )
   = 32.12 mm

69 i think because is the only one square

No he does not because he can only cover 12 square feet from 15 square feet which he will still need 3 more. this is because if 3×5=15 square feet and 15-12=3 which thats the answer