Help asap pls​

Me ! write an equation for the interior angles of this triangle that uses the triangle sum theorem

At the beginning of year 1, carlos invests $600 at an annual compound interest rate of 4%. he makes no deposits to or withdrawals from the account. which explicit formula can be used to find the account's balance at the beginning of year 5? what is, the balance?

Acircle has a diameter of 10 what is the area of the circle? use 3.14 for pi. round to the nearest hundredth