Mathematics for IGCSE & O level - Ratio And Proportion (Section 4 - No. 39)
The ratio of the area of a circle to the area of a square inscribed in that circle is approximately:
1:2
2:3
3:4
4:5
Giải thích
The ratio can be derived using the formulas for the area of a circle (πr²) and the area of a square with a diagonal equal to the diameter of the circle. The ratio simplifies to π/2, which is approximately 3:4.