Well you need to know a radius or other information
Answer:
If the question comes from a textbook
Step-by-step explanation:
use slader
Both A. and D. are increasing.
Answer:
D. 507 square units
Step-by-step explanation:
surface area of the rectangular pyramid

I would say that the child is prepared for solid foods because it is capable of grasping things such as food. If the baby can gulp easily and sit up without adjustment solids are okay to switch the child on at this point. Also you can give a child solid food anywhere starting from 4-6 months old.