SOLUTION: Find the area of an equilateral triangle whose side length is 8.

Algebra.Com
Question 120210: Find the area of an equilateral triangle whose side length is 8.
Answer by checkley71(8403)   (Show Source): You can put this solution on YOUR website!
AREA=1/2BH
TO FIND THE HEIGHT WE HAVE A RIGHT TRIANGLE WITH THE HYPOTENUSE=8 & ONE SIDE=4
8^2=4^2+X^2 WHERE X IS THE HEIGHT.
64=16+X^2
X^2=64-16
X^2=48
X=SQRT48
X=6.928 FOR THE HEIGHT.
AREA=1/2*8*6.928
AREA=27.71 ANSWER.

RELATED QUESTIONS

What is the side length of an equilateral triangle whose area is radical 3 cm... (answered by Alan3354)
Find the length of a side of an equilateral triangle whose altitude is 17.32... (answered by nerdybill)
Find the area of an equilateral triangle given a side length of 8... (answered by unlockmath)
What is the length of the altitude of an equilateral triangle whose side has a length of... (answered by richwmiller)
?...WHAT IS THE AREA OF AN EQUILATERAL TRIANGLE WHOSE SIDE LENGTH IS 12 CM? IS THE ANSWER (answered by mananth)
hexagon is equal to the area of an equilateral triangle whose perimeter is 36 inches.... (answered by CharlesG2)
Find the length of the altitude of an equilateral triangle whose side measures 6... (answered by nerdybill)
Find the length of a side of an equilateral triangle whose altitude measures... (answered by josgarithmetic)
The measure of the altitude of an equilateral triangle whose side has length 6... (answered by Earlsdon)