The length of a rectangle is two - fifths of the radius of a circle. The radius of the circle is equal to the side of the square, whose area is 1600 sq.units. What is the area (in sq.units) of the rectangle if the rectangle if the breadth is 10 units?
Choose the correct answer:	A) 140	B) 150	C) 160	D) 170	E) 180
Given that the area of the square = 1600 sq.units   =&gt; Side of square = √1600 = 40 units   The radius of the circle = side of the square = 40 units   Length of the rectangle = 2/5 * 40= 
<gadget id="calculator">2/5 * 40</gadget>
<output>16</output>
16 units   Given that breadth= 10 units   Area of the rectangle = lb = 16 * 10= 
<gadget id="calculator">16 * 10</gadget>
<output>160</output>
160 sq.units   Answer: Option 160
<result>C</result>
The length of a rectangle is two - fifths of the radius of a circle. The radius of the circle is equal to the side of the square, whose area is 1600 sq.units. What is the area (in sq.units) of the rectangle if the rectangle if the breadth is 10 units?