Question

Find the area of an equilateral triangle of side 4cm​

Answer 1

Answer:

Let the side of an equilateral triangle

= a = 4 cm

Area = A = ( √3/4 ) × a²

A = ( √3/4 ) × 4²

A = ( √3 × 4 × 4 ) / 4

A = 4√3 square cm

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Answer 2

Step-by-step explanation:

Area of equilateral =

$\sqrt{3}a ^{2} \div 4 \: \:$

so, Area if a = 4

$4 \sqrt{3}$

$4 \times 1.732$

$6.928cm²$

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