a) The perimeter of the trapezoid would just be all of the values added up, so 6 + 8 + 12 + 10 = 36 cm
b) The area of a triangle is (base × height) ÷ 2, so in this case you'd do (8 × 6) ÷ 2 which equals 24 cm^2
c) The formula is also (base × height) ÷ 2 so (12 × 8) ÷ 2 = 48 cm^2
d) Now you just add 24 and 48 to get 72 cm^2
I hope this helps!
