What is the area (in cm2) of an equilateral triangle whose perimeter is 24 cm?
Note: Round off to the nearest two decimal places.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 27.71.
Side length of triangle = 24/3 = 8 cm
Area of the equilateral triangle = (√3/4) × 82
= 16√3
= 16 × 1.732
= 27.712...
≈ 27.71 cm2