Question

Please help 50 points.​

Answer 1

`1) {a}^(2) = {39}^(2) - {15}^(2) \\ {a}^(2) = 1521 - 225 \\ {a }^(2) = 1296 \\ a = √(1296) = 36 \\ 2) {b}^(2) = {19}^(2) - {14}^(2) \\ {b}^(2) = 361 - 196 \\ {b}^(2) = 165 \\ b = √(165) = 12.8 \\ 3) {c}^(2) = {9.8}^(2) - {6.5}^(2) \\ {c}^(2) = 96.04 - 42.25 = 53.79 \\ 4) {d}^(2) = {24.7}^(2) - {14.5}^(2) \\ {d}^(2) = 610.09 - 210.25 \\ {d}^(2) = 399.84 \\ d = √(399.84) \\ d = 19.9`