Each side of an equilateral triangle is 8 cm. Its altitude is
It is given that,
Each side of an equilateral triangle, a = 8 cm
We know that,
Area of equilateral triangle =
=
= × 64
=
= 16 cm2
Also,
Area of triangle =
16 =
× a × Altitude
∴ Altitude =
= 4 cm
Hence, altitude of the triangle is 4 cm
Thus, option (c) is correct