We are asked to solve for the length AB of the given circle with center O. The angle of OCB is 90°, therefore, we can apply SOH CAH TOA and Pythagorean theorem in the problem.
OB² = OC² + CB² where OB is the radius which means its length is equal to 18 units. OB = 18 units OC = 13 units
18² = 13² + CB² CB = 12.45 units
AB is twice of CB length, therefore we have: AB = 12.45 * 2 AB = 24.9 units
The formula is I=prt I interest earned 90 P amount invested? R interest rate 0.04 T time 6/12 Solve the formula for p P=I÷rt P=90÷(0.04×(6÷12)) P=4,500 ....answer
