Rectangle ABCD has sides AB and BC in the ratio 3 : 1. If the diagonal AC is 5,
then find the area of the rectangle.
-- James.
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Rectangle ABCD has sides AB and BC in the ratio 3 : 1. If the diagonal AC is 5,
then find the area of the rectangle.
-- James.
From the given data I got the length of the rectangle as 15 and breadth as 5. So area of the rectangle is 75.
It is completely wrong Sriram
-- James
James could you give the answer and the approach. I could not figure out the way for solving this.
Let us say length of AB and BC are 3a,a. Then area of the rectagle is 3a^2.
By pythagoras theorem, 9a^2 + a^2 = 5^2
=> 10 a^2 = 25
=> a^2 = 2.5
therefore area of the rectanga is 7.5 Square units.
-- James