Can someone help me on these 2 questions?

The probability that a college student belongs to a health club is 0.3. the probability that a college student lives off-campus is 0.4. the probability that a college student belongs to a health club and lives off-campus is 0.12. find the probability that a college student belongs to a health club or lives off-campus. tip: p(a or b) = p(a) + p(b) - p(a and b) 0.54 0.58 0.70 0.82

Find two consexutive odd integers such that the sum of their square is 650

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.