4). A piece of wire in the shape of an arc of a circle of radius 15cm subtends an angle of 68° at the
centre of the circle. If the same wire is reshaped
to form an arc of a circle of radius 7cm, find the
angle now subtended at the centre of the new
circle. (use nr = 22/1)​

Which account has the highest effective annual interest rate? not necessary but show how you got your answer.a. account 1: interest is compounded quarterly at an annual rate of 4.20%.b. account 2: interest is compounded monthly at an annual rate of 4.15%.c. account 3: interest is compounded semiannually at an annual rate of 4.10%d. account 4: interest is compounded annually at a rate of 4.25%.