The length of each side of equilateral triangle having an area of 9cm*2(square)
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Area of equilateral triangle = ✓3/4a² [ where a is side of equilateral triangle]
9 = ✓3/4 × a
9×4/✓3 = a
a = 36/✓3 = 20.78 cm.
Therefore,
sides of equilateral triangle = 20.78 cm
9 = ✓3/4 × a
9×4/✓3 = a
a = 36/✓3 = 20.78 cm.
Therefore,
sides of equilateral triangle = 20.78 cm
Answered by
1
formulae of equilateral ∆= ✓3/4*s²
=✓3/4*s²=9cm²
=4.56cm
=✓3/4*s²=9cm²
=4.56cm
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