Find the area of a rhombus whose side is 25 cm and one of the diagonals is 35 cm? Options.
A) 276 sq.cm B) 268 sq.cm C) 618 sq.cm D) 297 sq.cm E) 700 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 * 35= 
<gadget id="calculator">1/2 * 40 * 35</gadget>
<output>700</output>
700 sq.cm.   Answer:700 sq.cm
<result>E</result>
Find the area of a rhombus whose side is 25 cm and one of the diagonals is 35 cm?