help me with my math homework pls

[unique apex]

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[pastel hatch]

bruh the picture didnt work

i give up

[pseudo pewter]

heic moment

here have https://cloudconvert.com/heic-to-png

[pastel hatch]

i can just screenshot the image

here

@pseudo pewter i got it

[pseudo pewter]

so do you understand area/perimetre

[pastel hatch]

yes

[pseudo pewter]

so, what are you stuck on for the perimetre area things

[pastel hatch]

finding the value of a

oh my god im stupid

the perimeter/area is going to have "a" in it

now just gauss addition

ima just find a gauss addition calculator

[pseudo pewter]

review your notes, how are you meant to solve this stuff?

[limpid tiger]

all u have to do is use area formula lb

substitute valus

for teh rectangle u get 7n.14=88n

u dont have to find teh value of n

[bitter elm]

do u know what perimeter + area formula is

[limpid tiger]

yeah

[bitter elm]

alr

so next one

[limpid tiger]

the triangle?

[bitter elm]

you do

no the gauss addition

from what i remember you do

[limpid tiger]

??

[bitter elm]

1 + 70, 2 + 69, 3 + 68....

[limpid tiger]

wth is guass additon

[bitter elm]

they all sum to 71

[limpid tiger]

ohh

that way

well

u can apply simple formulae

like sum of natural numbers is n(n+1)/2where n is no.of terms

[bitter elm]

uhhh

yeah thats right

tbh theres a faster way but i

alr

[limpid tiger]

guass addition is easier only in some cases

but