Which of the following measures is equal to 4 km 5 dam?
Which of the following measures cannot improve the navigability of river channel?
Only 1&2
Only 2 &3
Only 1
None of these
Q50. Which of the following measures cannot improve the navigability of river channel?
1. Dredging
2. Building dams and barrages.
3. Stabilising river banks by concrete.
A rectangular piece of land measures 0.7 km by 0.5 km. Each side is to be fenced with 4 rows of wire. What is the length of the wire needed?