1. The problem asks if the angle $b$ is 62° in the given circle diagram where $u=124$ and $b=62$ are indicated. 2. In circle geometry, the sum of angles around a point is 360°. 3. From the first diagram, the angles given are $a^\circ$, 100°, and $b^\circ$ with $u=124$ and $b=62$. 4. The sum of the arcs or angles around the circle should be 360°, so we check if $b=62$ fits with the other given values. 5. Since $u=124$ and $b=62$ are given explicitly, and the sum of the arcs $136 + 100 = 236$, then $360 - 236 = 124$ which matches $u$. 6. This confirms that $b=62$ is consistent with the given data. Final answer: Yes, $b$ is 62°.