Can someone do these 10 questions for me you only have to choose the correct letter please

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

Use circumcenter theorem to solve for the given values

Acredit union pays 5% annual interest, compounded daily, on saving deposits. find the value after one year of $500 deposited in this account. a-$20.40 b-$25.64 c-$520.40 d-$525.64