The diagonals of the two squares are in the ratio of 7:9 find the ratio of their area Choose the correct choice from the following answers:  A) 78:89  B) 5:48  C) 49:81  D) 74:36  E) 25:49
let the diagonals of the square be 7x and 9x respectively .   ratio of their areas =1/2(7x)^2:1/2(9x)   = 49x^2:81x^2=49:81   Answer(49:81)
<result>C</result>
The diagonals of the two squares are in the ratio of 7:9 find the ratio of their area