Home > MC1 > Chapter 9 > Lesson 9.3.2 > Problem 9-138
9-138.
Remember that a circle's area is equal to πr 2, where r is the radius.
π(3)2 = π(9) = 9π ≈ 28.26 sq cm.
The radius is equal to half the diameter. Remember to check your work.
Remember that a circle's area is equal to πr 2, where r is the radius.
π(3)2 = π(9) = 9π ≈ 28.26 sq cm.
The radius is equal to half the diameter. Remember to check your work.