A circle has a radius of $4$4 mm.
What is the exact area of the circle?
A circle has a radius of $12$12 mm.
A circle has a radius of $47$47 cm.
If the radius of the circle is $9$9 cm, find its area correct to two decimal places.
Choose and interpret the scale and the origin in graphs and data displays.
Use proportional relationships between the area of a circle and the area of a sector within the circle to solve problems in a real-world context.*
Make sense of problems and persevere in solving them.
Construct viable arguments and critique the reasoning of others.
Model with mathematics.
Use appropriate tools strategically.
Attend to precision.
Look for and make use of structure.
Look for and express regularity in repeated reasoning.