Category: 06. Circumference and Area of Circles

Introduction In this lesson, we distinguish between the area and circumference of a circle using real world problems.Example 1 Rhea wants to make a round photo frame for her sister. The radius of the photo frame is 10.2 cm. What is the circumference of photo frame? Solution Step 1: Given radius r = 10.2 cm…

Introduction In this lesson, we are required to find both the circumference and the area of the circle given its radius or diameter. Formulas to find the circumference and the area of a circle Example 1 Find the area and circumference of following circle. Use π = 3.14 Solution Step 1: Given radius r =…

Introduction The area of a circle is the extent of interior of a circle. The area of a circle is the number of square units inside that circle. If each square in the circle below has an area of 1 cm2, we can count the total number of squares to get the area of this…

Introduction The circumference is the perimeter of a circle. It’s the distance around a circle. Formula for Circumference of a Circle Example 1 Find the circumference of following circle. Take π = 3.14 Solution Step 1: Given radius r = 7.5 units Step 2: Circumference of Circle = 2πr = 23.143.147.5 = 47.1 unitsExample 2…