Do the area and perimeter for both questions! and if u can explain how! you

Question 1 - You need to split the L shape into  2 shapes.

6mm x 2mm = 12mm

and

5mm x 2mm = 10mm

add 12mm and 10mm 
the area is 22mm squared (a little 2 above the mm)

question 2 - you need to do the same

4mm x 2mm = 8mm squared 
7mm x 2mm = 14mm squared
area - 22mm squared