Chapter 6, Problem 3E

To determine

To calculate:The distance across the river.

Answer to Problem 3E

The distance across the riveris $32$ meters.

Explanation of Solution

Given information:

The opposite angles are equal; thus the opposite ratios are also equal.

Calculation:

Let the distance across the riverbe $x$ meters.

Since, theopposite angles are equal;

So, the opposite ratios are equal

Thus,

  $\frac{20}{10}=\frac{x}{16}$

Simplifying further, we have:

  $x=32$

Thus, the distance across the riveris $32$ meters.