The problem asks to calculate the size of the missing angle $p$ in a full circle, given that one angle is $61^\circ$.

1. Problem Description

The problem asks to calculate the size of the missing angle $p$ in a full circle, given that one angle is $61^\circ$.

2. Solution Steps

A full circle has $360^\circ$. The given angle is $61^\circ$. Let the missing angle be $p^\circ$. Then, the sum of the two angles must equal $360^\circ$. We have:

$p + 61 = 360$

To find the value of $p$, we subtract $61$ from both sides of the equation:

$p = 360 - 61$

$p = 299$

3. Final Answer

The missing angle is $299^\circ$.