
### Instruction: help me answer this question 7^2 + b^2 = (28/3)^2, think step by step
### Assistant:  , The answer is Squaring both sides of the equation c/a = 4/3, we get a^2 + b^2 = c^2. Substituting the values of a and c, we get 7^2 + b^2 = (28/3)^2.
