Area & Perimeter of Circles

Determining radius or diameter of a circle. Calculating the area and perimeter of real-world circular and semi circular objects. Applying the concepts of area and perimeter of circles to real-world scenarios. Relating circumference, area, radius and diameter of a circle and finding the value of any one when the others are given. Calculating changes to circle measures due to change in radius or diameter and applying the same to real-word problems.

Mapped to CCSS Section# 7.G.B.4

Know the formulas for the area and circumference of a circle and use them to solve problems; give an informal derivation of the relationship between the circumference and area of a circle.
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