Calculating Area in Topographical Maps

This video tutorial explains how to calculate the area on a topographical map. It begins with an introduction to the concept of area calculation using eastings and northings instead of length and breadth. The tutorial provides a detailed method for calculating the area by counting grids on the map, with a specific example of eastings 15 to 20 and northings 04 to 11. It also covers how to calculate the area of shaded parts by counting complete, half, two-thirds, and one-third squares. The video concludes with a summary and encourages viewer engagement.

What is the basic formula for calculating area in mathematics?

• Length divided by breadth

• Length plus breadth

• Length minus breadth

• Length times breadth

In a topographical map, what terms are used instead of length and breadth?

• Latitude and Longitude

• Eastings and Northings

• Height and Width

• X and Y coordinates

How many grids are counted between eastings 15 to 20?

• 3 grids

• 4 grids

• 5 grids

• 6 grids

What is the area of one grid in a topographical map?

• 100 square meters

• 10 square kilometers

• 1 square meter

• 1 square kilometer

If you have 35 grids, what is the total area in square kilometers?

• 30 square kilometers

• 45 square kilometers

• 35 square kilometers

• 40 square kilometers

How do you calculate the area of shaded parts in a topographical map?

• By using a ruler

• By counting complete, half, two-thirds, and one-third squares

• By counting only complete squares

• By measuring the perimeter

What is the area of four complete squares?

• 4 square kilometers

• 5 square kilometers

• 3 square kilometers

• 2 square kilometers

How many half squares are counted in the shaded area example?

• 5 half squares

• 4 half squares

• 3 half squares

• 2 half squares

What is the total area calculated for the shaded part in the example?

• 11.2 square kilometers

• 10.2 square kilometers

• 9.2 square kilometers

• 8.2 square kilometers

What should you do if you enjoyed the video?

• Like and leave a comment

• Dislike it

• Ignore it

• Share it with friends