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Each side of an equilateral triangle measures 8cm. Find:
(i) The area of the triangle, correct to 2 places of decimal
(ii) The height of the triangle, correct to 2 places of decimal.
Take =1.732
(i) We know that,
Area of an equilateral triangle = sq units
It is given that, each side of equilateral triangle is of 8 cm
Therefore,
Area = × 82
=
=
= 1.732 × 16
= 27.712
= 27.71 cm2 (Up to 2 decimal places)
(ii) We also know that,
Height of an equilateral triangle = a
= × 8
=
= 1.732 × 4
= 6.928
= 6.93 cm (Up to 2 decimal places)