Question

find the area of equilateral triangle of side 4 cm correct to two places of decimal​

Answer 1

A≈6.93cm²

a Side

4

cm

Solution

A=3

4a2=3

4·42≈6.9282cm²

Answer 2

Answer:

Area of an equilateral triangle = root 3 /4 a^2

A=4 root 3

root 3 = 1.713

A = 6.852 sq cm