Use the formula relating angular size, physical size and distance.
-A planet has an angular diameter of about 1° and a distance of about 88 million kilometers. What is its true diameter?
A)1.54 million kilometers
B)10.34 million kilometers
C)11.87 million kilometers
D)3.07 million kilometers

Question

Quizplus · Accepted Answer

The angular diameter is given by the formula:angular diameter = (physical diameter) / (distance)Solving for the physical diameter, we get:physical diameter = (angular diameter) * (distance)Plugging in the given values, we get:physical diameter = (1°) * (88 million kilometers)Converting degrees to radians, we get:physical diameter = (1° * (π/180)) * (88 million kilometers)physical diameter ≈ 1.54 million kilometersTherefore, the correct answer is A.

Use the Formula Relating Angular Size, Physical Size and Distance