In this illustrated problem set, students use pi to detect frost in lunar craters, determine the density of Mars' liquid core, calculate the powered output from a dam, and find out how far a spacecraft travels as it returns data to Earth.

In this illustrated problem set, students use pi to detect frost in lunar craters, determine the density of Mars' liquid core, calculate the powered output from a dam, and find out how far a spacecraft travels as it returns data to Earth.

In this illustrated math problem, students use the mathematical constant pi to calculate the area covered by a laser used to detect frost on the Moon's surface.

In this illustrated math problem, students use the mathematical constant pi to calculate the area covered by a laser used to detect frost on the Moon's surface.