Answer:
15.56 ft
Explanation:
The formula for the area of a triangle is
A = ½bh
This is an isosceles triangle, so b = h.
Substitute the value of h
A = ½b² = 121
Multiply each side by 2
b² = 242
Take the square root of each side of the equation.
b = √242 ≈15.56 ft
The length of the two equal sides of the triangle is approximately 15.56 ft.
Check:
A = ½(15.56)² = ½× 242 = 121 ft²