Answer:
3.4 tonnes
Step-by-step explanation:
Kg --> tonnes = / 1000
50 x 40 / 1000 = 2. 2 + 1.4 = 3.4.
549440
777^2 = 603729
223^2 = 54289
603729 - 54289 = 549440
6/8 divided by 5/7 is 1.05/ 1 1/20