The top surface of the wings of a test plane must be coated with a special lacquer that costs ​$90 per square meter. Find the cost to coat the shaded wing surface of the plane.

28 m
14 m
5 m

1 answer

The shaded wing surface of the plane has an area of 28 m².

Cost to coat the shaded wing surface = Area x Cost per square meter
Cost to coat the shaded wing surface = 28 m² x $90/m²
Cost to coat the shaded wing surface = $2520

Therefore, the cost to coat the shaded wing surface of the plane is $2520.