Question

Determine the length across the river, x to the nearest hundred ​

Answer 1

`x=20.67\ ft`

Explanation:

we know that

The Midpoint Theorem says that the line segment joining the midpoints of any two sides of a triangle is parallel to the third side and equal to half of the third side

so

in this problem

Applying the midpoint theorem

`x=(124)/(3):2=(124)/(6)=(62)/(3)=20.67\ ft`