Question

find the area of an equilateral triangle with side 2 under root 3cm. (use heron's formula)​

Answer 1

Answer:

3/2 or 1.5 cm

Step-by-step explanation:

Area of equilateral triangle = √3/4 s²

Side= 2√3 cm

Area = √3*2√3 / 4

= 2*3/4

= 6/4

=3/2 cm

= 1.5 cm

Hope it helps

Answer 2

a= 2√3 cm , b= 2√3 cm , c= 2√3 cm

s= 2√3 + 2√3 + 2√3 / 2

= 6√3/2

= 3√3

Area of equi. triangle = √s(s-a)(s-b)(s-c)

=√3√3(3√3-2√3) (3√3-2√3) (3√3-2√3)

=√ 3√3 (√3) (√3) (√3)

=√ 3√3 x 3√3

= 3√3 cm