Question

The area of an equilateral triangle with side 6 cm is,
9✓3 cm2
6✓3cm2
9 ✓cm2
6 cm2
please answer fast​

Answer 1

Given :-

• The area of an equilateral triangle with side 6 cm

To find :-

• Area of equilateral triangle

Solution :-

• Side of equilateral triangle = 6 cm

As we know that

→ Area of equilateral triangle

→ √3/4 × a²

where " a " is side of equilateral triangle

According to the question

• a = 6

→ √3/4 × a²

Put the value of " a "

→ √3/4 × (6)²

→ √3/4 × 6 × 6

→ √3/2 × 3 × 6

→ √3 × 3 × 3

→ 9√3 cm²

Hence,

• Area of equilateral triangle is 9√3cm²

Therefore, the correct option is 9√3cm²

More to know :-

• Area of circle = πr²
• Circumference of circle = 2πr
• Perimeter of rectangle =2(l + b)
• Perimeter of square = 4 × side
• Area of square = side × side
• Area of rhombus = ½ × product of diagonals
• Area of Parallelogram = base × height
• Area of trapezium = ½ × sum of parallel sides × height

Answer 2

rea of circle = πr²

Circumference of circle = 2πr

Perimeter of rectangle =2(l + b)