```r
x = b[1]
y = b[2]
x_and_y = st_intersection(x, y)
plot(b)
plot(x_and_y, col = "lightgrey", add = TRUE) # color intersecting area
```

<div class="figure" style="text-align: center">
<img src="figures/circle-intersection-1.png" alt="Overlapping circles with a gray color indicating intersection between them." width="576" />
<p class="caption">(\#fig:circle-intersection)Overlapping circles with a gray color indicating intersection between them.</p>
</div>