Question 118
The diagonals of two squares are in the ratio of 3: 7. What is the ratio of their areas ?
Solution
Ratio of square of diagonal to area of square = $$2:1$$
Let diagonal of first square = $$d_1=3$$ cm and $$d_2=7$$ cm
Thus, ratio of areas = $$\frac{A_1}{A_2}=(\frac{d_1}{d_2})^2$$
= $$\frac{3^2}{7^2}=\frac{9}{49}$$
=> Ans - (B)
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