Answer:
The first ones area is 35 cm squared
The third ones area is 32 cm squared
Step-by-step explanation:
A=1/2H (B1+B2)
35=2.5(8+6)
32=2(7+9)
(S+8)+7
So, (Cars, Months)
(13,3)
(26,6)
(39,9)
(52,12)
etc.