The area of a sector is found using the formula :
Area = πr^2(angle/360)
R is given as 6 meters and the angle is given as 78 degrees.
Area = π * 6^2 * (78/360)
Area = π * 36 * 0.21666
Area = π * 7.8
Area = 7.8π square meters. ( Exact area in terms of PI)
or using 3.14 for PI: Area = 24.492 square meters.
Round the decimal area as needed.