If $4200 is invested into a savings account for which interest is compounded semiannually, and if the $4200 turns into $4900 in 4 years, what is the interest rate of the savings?

Maci and i are making a small kite. two sides are 10". two sides are 5". the shorter diagonal is 6". round all your answers to the nearest tenth. 1. what is the distance from the peak of the kite to the intersection of the diagonals? 2. what is the distance from intersection of the diagonals to the top of the tail? 3. what is the length of the longer diagonal?