if the base of the equilateral triangle with sides 10 centimeters long , Which is CLOSEST to the area of the base?
Each side is L.
The altitude is Lsin(60°)=(√3)L/2
The area is
A=bh/2
= (√3)L²/4
Substitute L=10 cm to calculate the exact area of the equilateral triangle.
The choices are not posted, so we cannot say which one is the closest.