Question

The moon's distance from the earth is 360000 kn
and its diameter subtends an angle of 42' at the
eye of the observer. The diameter of the moon is
(1) 4400 km
(2) 1000 km
(3) 3600 km
(4) 8800 km​

Answer 1

the answer is 4400km

here we think the diameter is not straight line.

so we use r×angle=s