Created By : Abhinandan Kumar

Reviewed By : Rajashekhar Valipishetty

Last Updated : May 30, 2023


Enter the Equilateral Triangle Side


Area of an Equilateral Triangle side 21 centimeters is 190.953 centimeters2.

An equilateral triangle has all its sides as equal. The perpendicular drawn from the vertex of the triangle to the base divides the base into two equal parts. To calculate the area of the equilateral triangle, we have to know the measurement of its sides.Area of an Equilateral Triangle side 21 centimeters is 190.953 centimeters2.


    Area of an Equilateral Triangle 21 cm in other units

Value unit
0.0019095 km2
0.0011865 mi2
1.90953 m2
6.2648622 ft2
75.1783465 in2
2.0882874 yd2
190.953 cm2
1909.53 mm2

Area of an Equilateral Traingle side 21 cm is 190.953 cm2

Steps:

Given that side = 21 cm

Area of an Equilateral Triangle = A = (√3)/4 × 212

Put the value of side in Area Formula.

Area= $(√3)\above 1pt4$ × 212

Area = $(√3)\above 1pt4$ x 21 x 21

Multiply 21.0 cm and 21.0 cm

Area = $(√3)\above 1pt4$ x 441.0

Area = $1.732\above 1pt4$ x 441.0

Area = 0.433 x 441.0

Area= 190.953 cm2

∴ Area of an Equilateral Traingle side 21 cm is 190.953 cm2