1.

Find the area of an equilateral triangle each of whose sides measures(1) 18 cm​

Answer»

(i) 18 CM

Area of the equilateral triangle =

(√3)/4) × (SIDES)² sq. Units

=> (1.73/4) × (18)² [because √3 = 1.73]

=> (1.73 × 324)/4

=> 140.13 cm²



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