Question

DOMO
3. The ratio of the diameters of the earth and moon is 100 to 27. How many
times the area of the earth is greater than the moon? Give your answer
correct to two significant figures.
11:
1 10​

Answer 1

3.14 × r × r = area

3.14 × 50 × 50 = 3.14 × 13.5 × 13.5

2500 = 182.25

Hence 2500/185.25 = approximately 13.