Altogether they swam n + (n - 12) laps
Hope this helps :)
Step-by-step explanations
explanation is in the image above hope this helps please mark me brainiest
Answer: D. Square
The cross section is shown as the shaded region. There are four sides to the shaded figure, so the cross section is a quadrilateral. This rules out choice C. We can also cross choice B off the list because cross sections of 3D figures are 2 dimensional.
Choice A is ruled out as well because we have both pairs of opposite sides that are parallel. The only thing left is choice D. This is true assuming we have a square prism. Any cube is a square prism that has its height equal to the width and length.
A ratio equivalent to 3/20 can be 6/40 or even 9/60
