One of the sides of an equilateral traingle is of length 12 cm . find the area of the traingle
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Step-by-step explanation:
Side = a = 12 cm (given)
Area of the equilateral triangle
= √3/4 × a²
= √3/4 × (12)²
= √3/4 × 12 × 12
= √3 × 12 × 3
= 36√3 cm²
Circumference of circle = 88 cm
2πr = 88
2 × 22/7 × r = 88
44/7 × r = 88
r = 14 cm
Radius of circle = 14 cm
Area of the circle
= πr²
= 22/7 × 14 × 14
= 22 × 14 × 2
= 616 cm²
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