Question

Area of an irregular shape can be measured accurately using graph paper.

• A. True
• B. False

Answer 1

The correct option is B False

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