With questions related to area of sectors (circles)! you so much!

Area of the sector = 35/360 x π(80)² = 1954.769m²

Area of the triangle = 1/2 (80)(80) sin(35) = 1835.445m²

Area of the shaded part = 1954.769 - 1835.445 = 119m² (3 s.f.)

Area of the sector = 40/360 x π(8)² = 22.340 cm²

Area of the triangle = 1/2 (8)(8) sin(40) = 20.569 cm²

Area of the shaded part = 22.340 - 20.569 = 1.77 cm² (3 s.f.)

point a is the center of the circle that passes through points e, f, and g and the center of the circle that passes through points x, y, and z.

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m