Question

Which paper is used to find the area of irregular shapes?

Answer 1

Area of an irregular shape cannot be measured accurately using graph paper. However, its approximate area can be found.

One of the approaches is listed below:

1. Count the number of squares completely covered by the region $\left(A\right)$.
2. Count the number of half squares covered by the region $\left(B\right)$.
3. Count the number of sqaures covered less than half by the region $\left(C\right)$.
4. Count the number of sqaures covered more than half by the region $\left(D\right)$.
5. Total area is approximately $(A+0.5B+D)\times x$ where $x$ is the area of $1$ square.