On a photograph of the moon,the moon measures 30 cm in diameter,and a small crater measures 0.2 cm.The moon's physical diameter is 1738 km.What is the physical diameter of the small crater?
A) about 1738 km
B) about 12 km
C) about 520 km
D) about 350 km
E) 3.5 km

Question

Quizplus · Accepted Answer

The scale of the photograph is 1738 km / 30 cm. Using this scale, the physical diameter of the crater is (0.2 cm * 1738 km) / 30 cm = about 12 km.

On a Photograph of the Moon,the Moon Measures 30 Cm