find the area of an equilateral triangle whose side is root 3 cm
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side = a = √3
area of equilateral = √3/4 x a²
=√3/4 x 3 (3 = √3 x √3)
= 3√3 /4 cm²
= 1.299 cm²
area of equilateral = √3/4 x a²
=√3/4 x 3 (3 = √3 x √3)
= 3√3 /4 cm²
= 1.299 cm²
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we know that..
Area of an equilateral triangle= root 3÷4×a square
So.. Area=root3 ÷4×3..
=3root3 /4
Now multiplying root 3 on both sides
( 3 × root 3 ×root 3)÷4×root 3
(3×3×3)÷4root3
=1.299 cm square
Area of an equilateral triangle= root 3÷4×a square
So.. Area=root3 ÷4×3..
=3root3 /4
Now multiplying root 3 on both sides
( 3 × root 3 ×root 3)÷4×root 3
(3×3×3)÷4root3
=1.299 cm square
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