Check the picture below.
notice chord QR is a diameter, thus the vertex at P has a right-angle by Thales theorem.
(m.v^2)/ 2 = 25000
<=> 500.v^2 = 50000
<=> v^2 = 100
<=> v = 10 m/s
Answer:
13.5
Step-by-step explanation:
It is 54. Draw it out. You will see that DCB - RCB = DCR