Finding area of shaded region of figures

[Tara123]

Can you please help with these problems...as parents if we have the answers we can help with following the formula and know it’s correct. Thank you!

 

[Deleted member 4993]

Can you please help with these problems...as parents if we have the answers we can help with following the formula and know it’s correct. Thank you!

You say:

"....we can help with following the formula"

Which formulas do you plan to use for these problems?

If you show the work done with the formula - we can confirm whether it is correct.