
- Base = 2 9/10 km
- Height = 4 6/7 km







<em>Thus, The area of the triangle is 3.08 kilometers...~</em>
The first thing we must do for this case is find the number of boys surveyed.
We have then:
(1-0.45) * (80) = 44
We are now looking for the number of boys employed.
We have then:
(1-0.25) * (44) = 33
Answer:
there are 33 boys employed.