Once you know what 'radius' and 'area' mean, watch this video to learn how to calculate the area of a circle. Pay attention to the common mistakes, such as using an incorrect order of operations.
Area - Area Of A Circle is a free educational video by mrmaisonet.It helps students in grades 9,10,11,12 practice the following standards 7.G.B.4.
1. 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..