I will mark u as the brainiest if u get this correct
thx x
It rly helps x

108 cm

Step-by-step explanation: rectangle formula = length time width

triangle formula = .5 times base times height

-so 12 times 5 is 60

-next to figure out the height of each triangle i am going to subtract 5 from 13 which equals 8, but there are 2 triangles so I will divide 8 by 2 which is 4

-the height of each triangle is 4 and the base is 12

- .5 times 12 times 4 equals 24

-but there are 2 triangle so instead of adding 60 and 24 it has to be 60+24+24 which equals 108

you answer is a

step-by-step explanation: