Area and perimeter help us measure the size of 2D shapes. A small square is located inside a bigger square. From there well tackle trickier shapes such as triangles and circles.
From there well tackle trickier shapes such as triangles and circles.
Lets look at some examples involving the area of a circle. To solve this problem you first have to determine the circles radius which is half of its diameter. The running track displays two rectangles and two semi circles. Well start with the area and perimeter of rectangles.