What would be the ratio of the areas of two circles, i.e. Circle-A and Circle-B, the radius of which are 4 cm and 8 cm, respectively?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 1: 4.
Area of circle = πr2; π = 22/7
Area of circle A = π42
Area of circle B = π82
Ratio of area of circle A to circle B = 16/64 = 1: 4