Respuesta :

lazyfroggo

Answer:

99

Step-by-step explanation:

(b)(c) = 21

SInce there are 2 triangles with an area of 21, multiply that by 2 and divide it by 1/2.

(c)(a) = 39

Do the same thing

(a)(c) = 39

add everything up

21 + 39 = 60

60 + 39 = 99

Hope this helps!