SOLUTION: Triangle: https://vallejocity.owschools.com/media/g_geo_ccss_2016/8/groupi26.gif If the perimeter of an equilateral triangle is 30 ft, what is the area? A.) 25√2 sq. f

Algebra ->  Surface-area -> SOLUTION: Triangle: https://vallejocity.owschools.com/media/g_geo_ccss_2016/8/groupi26.gif If the perimeter of an equilateral triangle is 30 ft, what is the area? A.) 25√2 sq. f      Log On


   

Question 1111644: Triangle: https://vallejocity.owschools.com/media/g_geo_ccss_2016/8/groupi26.gif
If the perimeter of an equilateral triangle is 30 ft, what is the area?
A.) 25√2 sq. ft.
B.) 25√3 sq. ft.
C.) 50√3 sq. ft.
Answer by ikleyn(52775) About Me  (Show Source):
You can put this solution on YOUR website!
.
The side of such triangle is  s = 10 ft  and the area is


Area = %281%2F2%29%2As%2A%28%28s%2Asqrt%283%29%29%2F2%29 = %281%2F2%29%2A10%2A%28%2810%2Asqrt%283%29%29%2F2%29 = 25%2Asqrt%283%29.


Option B).