require some hints/tips

[thin tulip]

find the area of both triangles and subtract

[dry ocean]

if im not wrong, it should be: (h · b2 / 2) - (h · b1 / 2)
where h is the height, b1 is the short base and b2 the long base

[low basin]

Try finding the area of the triangle and adding Them, since its a octagon the area is the same for all the triangles

You have that each side is 12cm

so area of the triangle is pretty easy

Then you just have to add them

But yeah remember that u have to convert

cm to inches or vice versa

If u didnt do that

yeah

so that u get same unit for both of them

[dusky python]

.5 times base times height

[low basin]

You could try to divide that into 2 triangles

[dusky python]

so literally .5 times 8 times 5

[dry ocean]

i had a different way of doing it, tell me if im wrong 😅
i divided it into 2 rectangles, one beign the sum of the 2 triangle you get by cutting the top and bottom, and the other is the rest u are left with, so: 4 · 3 + 5 · 4

[dry ocean]

i dont get that, sorry if im dumb xd

[low basin]

Not sure what you did but i think you got the correct answer

[low basin]

Its just the formula for calculating the triangle, height times base times 0,5 (or divided by half)

[dry ocean]

isnt the awnser 32? i did it in 2 different ways and got the same number xd

but 5 · 8 /2 is 20

this is the first i thought

and the other one