Question

The Sun’s angular diameter is measured to be 1920”. The distance D of the Sun from the Earth is 1.496 × 1011 m. What is the diameter of the Sun ?

Answer 1

So we're to understand 1920" as

19203600 degrees =19203600⋅2π360 radians

So we're looking at a diameter

d=1.496×1011⋅19203600⋅2π360 meters

d=1.39254×109 meters