Question

Each side of an equilateral traingle is equal to the radius of the circle whose area is 154cm² the area of the traingle is

Answer 1

Step-by-step explanation:

side of quadrilateral= 7cm

Answer 2

Answer:

Area of circle = πr²

So,

πr² = 154

=>22/7 r²= 154

=> r² = 154×7/22

=> r² = 49

So,

r =√49= 7

Now According to question

Radius of circle = each side of equilateral triangle.

Area of equilateral triangle = a²√3/4

= (7)²√3/4

= 49√3/4

= 21.22 cm²

Hence area of the equilateral triangle= 21.22 cm² (Approx.)