someone plss answer me these questions correctly with steps also

Answer:
Q3. (0.2×0.14)+(0.5×0.91)
(0.1×0.2)
= 0.938
4. 4/3+4/3+4/3+4/3+4/3
= 6.67
5. 4×6⅔= 26.67
3⅓×5⅓= 10/3×16/3= 17.78
26.67-17.78= 8.89
6. 142/5×102/5×23/5
72/5 × 52/5 × 13/5
= 389.376cm²