Radius of circle = r = 5 cm
Angle made by the arc = Ф = π/4 radians
Area of sector = A = ?
The formula for the area of a sector is:
A = 0.5r²Ф
Using the values, we get:
A = 0.5 x (5)² x π/4
A = 3.125π cm²
Rounded of to nearest tenth, the area of the sector GHJ is 3.1π cm²
