Question

The diagonals of two squares are in the ratio of 3 : 7. What is the ratio of their areas?

• A. 3 : 7
• B. 9 : 49
• C. 4 : 7
• D. 7 : 3

Answer 1

Answer:

B. 9 : 49

Area of square $=\frac{1}{2}\times{(diagonal)^2}$

Required ratio $=\frac{(d1)^2}{(d2)^2}$

$=(\frac{3}{7})^2$

$=\frac{9}{49}=9:49$