Question

How can the area of irregular shape be measured?

Answer 1

1. Area of an irregular shape like a leaf, feather cannot be calculated using formula.
2. Exact area of these irregular shapes can't be calculated still its approximate area can be found by an indirect method using a graph paper.
3. Graph paper will be taken and the outline of leaf or irregular shape is drawn and removed .

1. Number of full squares and half squares present inside the outline are counted and area is found using a formula.
2. The Area is calculated by
   $Total\mathit{}area\mathit{=}number\mathit{}of\mathit{}full\mathit{}squares\mathit{}\mathit{+}\frac{\mathit{1}}{\mathit{2}}\mathit{(}number\mathit{}of\mathit{}half\mathit{}or\mathit{}more\mathit{}than\mathit{}half\mathit{}squares\mathit{)}\mathit{}c{m}^{\mathit{2}}$

Hence, the area of an irregular shape can be measured using graph paper.