Question

Two concentric circles having radii 7 and 25 are given. The chord of the circle with larger radius touches the circle with smaller radius, then find the length (in cm) of the chord.

Answer 1

AB = ?

➪ IN ∆ OAC -

➪ OA² = a² + AC²

➪ 25² = 7² + AC²

➪ AC² = 625 - 49 = 576

➪ AC = 24

Similarly

➪ IN ∆ OCB -

➪ OB² = OC² + BC²

➪ 25² = 7² + BC²

➪ BC² = 625 - 49

➪ BC = 24

➪ AB = AC + CB

➪ AB = 24cm

Answer 2

I don't know this answer