How is b the answer???

B
Step-by-step explanation:
(1)Area of triangle= 1/2 x height (7cm) x base (8cm)
= 56/2
= 28
(2)Area of circle = (Pi)r^2
= (Pi)4cm^2
= 50.26548....
Since the circle is half divide the above by 2
= 25.132741.....
Round the answer to the nearest hundredth
= 25.13
(1) + (2)
28+25.13= 53.13
Hope this helps! :)