Ask your own question, for FREE!
Mathematics 17 Online
OpenStudy (anonymous):

Find the area of an equilateral triangle with side 9

OpenStudy (anonymous):

idk

OpenStudy (anonymous):

so what is an equilateral triangle?

OpenStudy (anonymous):

a triangle with 2 eaqal sides

OpenStudy (anonymous):

A triangle in which all 3 sides are equal

OpenStudy (anonymous):

close but no. that is an isoseles triangle

OpenStudy (anonymous):

tonee is correct

OpenStudy (anonymous):

how do you find the area of a triangle

OpenStudy (anonymous):

all the sides are 6 remember

OpenStudy (anonymous):

a=b(h) ?

OpenStudy (anonymous):

I gtg

OpenStudy (anonymous):

yes

OpenStudy (sepeario):

there are two ways: heron's formula, or using pythagoras' theorem to work the height.

OpenStudy (anonymous):

now solve

OpenStudy (sepeario):

you can't solve because you don't know the height lol

OpenStudy (anonymous):

area not perimiter

OpenStudy (sepeario):

yeah you need to know the height for the area.

OpenStudy (anonymous):

hmm your right

OpenStudy (anonymous):

forget what I said lol

OpenStudy (anonymous):

if you split the triangle into 2 right triangles, the right triangles have a hypotenuse of 9 and a base of 4.5

OpenStudy (anonymous):

then you can use the pythag theorem to find the height, and then find the area

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!