Question

how to improve my communication skills

i cant changing the date of voucher entry. 

foot of perpandicullar

a conical tent is 10 m height and the radius of it base is 24 cm find slant height of the tent

An object of 7 cm height is placed at a distance of 12 cm from a convex lens of focal length 8 cm find the position nature and size of the image

Questions:
1.Formula of working capital
2.Basic accounting equation
3.T-code for parked documents in SAP and clearing documents
4.Accrued interest/income entry & definition
5. Prepaid expenses entry/example/definition
6.Discount allowed entry
7.Asked a case study, need to tell how much amount is allotted for AR/AP
8. What is ME23N in SAP
9.VAT journal entry
10. What is Purchase order, what do you find there
11.Goods receipt note(GRN) entry & Invoice posted entry in SAP
12. Case sum like: $100 is invoice and $150 PO, how GRN posted?
13. Golden rules
14. Optional question to identify Personal, Real and Nominal Account.

need answer for above mentioned.