In Clash of Clans, a lighting spell can attack objects within a circle of radius = 4. You are the game designer and programmer. To know the attack range and draw the graphics correctly, you have to calculate the circle's area and circumference.
What is the area of the circle covered by the spell, measured in π?
What is the circumference of the circle, measured in π?
Aligned with Common Core:
7.G.4 - Area and circumference of a circle