One side of a rectangular field is 13 m and one of its diagonal is 17 m. Find the area of the field.  Choose the correct option.
A) 100 B) 141.7 C) 150 D) 180 E) None
Solution   Other side = √(17)2 - (13)2   = √289 - 169= 
<gadget id="calculator">289 - 169</gadget>
<output>120</output>
√120= 10.9 m.   ∴ Area = (13 x 10.9)m2 = 141.7 m2.   Answer 141.7
<result>B</result>
One side of a rectangular field is 13 m and one of its diagonal is 17 m. Find the area of the field.