Question

find the area of an equalateral triangle, sides are 12. round to the nearest 10th

Answer 1

First, get height.
6^2 + h^2 = 12^2 so h^2 = 12^2 - 6^2
Then, A = (1/2)bh

Answer 2

\[Area= \frac{ \sqrt{3}a^2 }{ 4 }\]

a= Side

Answer 3

i have no idea how to do that

Answer 4

\[\frac{ \sqrt{3}*12*12 }{ 4 } = \sqrt{3}*36\]

Answer 5

\[\sqrt{3} = `1.73\]

Answer 6

so 62.28 is the answer ?

Answer 7

Yup and Round it to Nearest 10 th