Question

please solve it .........​

Answer 1

Answer:

the length of the radius is 9cm

as ∆OAB is an right angled triangle

taken OA a perpendicular,OB as hypotenuse and AB as base

solved by Pythagoras theorem

let OA be x

12²+x² = 15²

225-144 =81

✓81 =9

Step-by-step explanation:

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Answer 2

Answer:

9cm

Step-by-step explanation:

Using Pythagoras

15^2=12^2+OA^2

225=144+OA^2

225 - 144 = OA^2

√81 = OA

9cm = OA(radius)