Question

Two concentric circles have radii equal to 25 cm and 7 cm. find the length of a chord ab of the outer circle that touches the inner circle.

Answer 1

Heya !!

Here's your answer..⤵⤵
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OB = 25 cm
OD = 7 cm

OD intersect AB at right angle.

In ∆ ODB, angle ODB = 90°

OD² + DB² = OB²

7² + DB² = 25²

DB² = 625 - 49

DB² = 576

DB = √576

DB = 24 cm

AB = 2AB

AB = 2(24)

AB = 48 cm

Length of chord AB is 48 cm.
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Hope it helps..
Thanks :)

Answer 2

Hello friend

Good morning

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Your answer is given in the attachment

I hope it will help you a lot

Thanks

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