Respuesta :

sophia675654

Answer:

12

Step-by-step explanation:

a=ab/2

Area=3 times 4/2= 6

but there are 2 traingles so 6 times 2= 12
15 ! because if you made that triangle a rectangle the length would b 8 and hight would b five 8x5 is forty and bc its a triangle you split it in half so 40 devided by 2 is 15

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