Question

diameter of a circle is 26cm. The cord is at 5cm from center of a circle find lenght of cord​

Answer 1

Answer:

The perpendicular from the center to the chord divides the chord into two equal parts. Now, if you draw the diagram, you can see 2 right angled traingles, with the height being '5cm' and hypotenuse being the radius,i.e, '13cm'. So length(half length) of chord= rt13^2 - 5^2 = rt(169-25) =12 cm= half lenth of chord.