Question

The perimeter of an equilateral triangle is 60cm find its area . Use root 3 as 1.73

Answer 1

the one hand of this triangle is 60/3=20
the area is root 3by 4 into 20 square=173 cm square

Answer 2

Perimeter of a equilateral triangle = 3 × a = 60 cm

a = 60/3 = 20 cm

Area of a equilateral triangle = root (3)× a^{2}/4 = 1.73 × 20^{2}/4

= 173 Sq. cm

Here a = Side of the triangle