Question

Help me please i am not the smartest

Answer 1

x=28

Explanation:

Let the length of QR be 'x' cm.

(We will be using the chord theorem; the products of the lengths of the line segments on each chord are equal.)

Therefore,

PR x QR = NR x OR

13 x = 30 x 12

x= 360/13

x = 27.7

x = 28