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.

Question

28 m
14 m
5 m
.
.
.
Question content area right
Part 1
The cost to coat the shaded wing surface of the plane is ​$
  
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Answer 1

First we need to calculate the area of the shaded wing surface:

Area = length x width
Area = 28m x 5m
Area = 140 square meters

Now we can find the cost to coat the shaded wing surface:

Cost = area x cost per square meter
Cost = 140 sqm x $90/sqm
Cost = $12,600

Therefore, the cost to coat the shaded wing surface of the plane is $12,600.