What is the area of the equilateral triangle? Round to the nearest square centimeter.

___cm2

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Question

What is the area of the equilateral triangle? Round to the nearest square centimeter.
 
___cm2

http://static.k12.com/calms_media/media/1579000_1579500/1579376/1/69b4235641678bb4a783843e64e765726723b636/MS_IMC-150126-130915.jpg

anonymous · Answer

If its equilateral then all sides are 30cm

anonymous · Answer

if you take half of one side you can find the height

anonymous · Answer

wait whattt o.o

anonymous · Answer

so let the height be A in the pythagorean theorem

anonymous · Answer

and let 15 (half of a side) be B
and let 30 be C

anonymous · Answer

ohhh okay, i get it

anonymous · Answer

what did you get for the answer?

anonymous · Answer

26 XD

anonymous · Answer

now you need to find the area

anonymous · Answer

hmmm o.o

anonymous · Answer

multiply the height by the base (30)

anonymous · Answer

26 x 30 is 780

anonymous · Answer

you probably need to use the exact height, 26 is rounded

anonymous · Answer

$$\sqrt{675}\times30$$