Find the area of a rhombus whose side is 25 cm and one of the diagonals is 30 cm? Choose the correct choice from the following options.
A) 272 sq.cm B) 267 sq.cm C) 286 sq.cm D) 251 sq.cm E) 600 sq.cm
Consider the rhombus ABCD. Let the diagonals intersect at E. Since diagonals bisect at right angles in a rhombus.   BE2 + AE2 = AB2   252 = 152 + AE2 AE   = √(625 - 225)= 
<gadget id="calculator">(625 - 225)</gadget>
<output>400</output>
√400= 20,   AC = 20 + 20= 
<gadget id="calculator">20 + 20</gadget>
<output>40</output>
40 cm.   Area of a rhombus= 1/2 * d1d2   = 1/2 * 40 * 30= 
<gadget id="calculator">1/2 * 40 * 30</gadget>
<output>600</output>
600 sq.cm.   Answer:600 sq.cm
<result>E</result>
Find the area of a rhombus whose side is 25 cm and one of the diagonals is 30 cm?