The perimeters of two squares are 60 cm and 40 cm. Find the perimeter of a third square whose area is equal to the difference of the areas of the two squares?  Choose the most appropriate option
A) 76 cm B) 24 cm C) 88 cm D) 44.8 cm E) 34 cm
We know perimeter of square = 4(side)   So Side of first square = 60/4= 
<gadget id="calculator">60/4</gadget>
<output>15</output>
15 cm   Side of second square= 40/4= 
<gadget id="calculator">40/4</gadget>
<output>10</output>
10 cm   Area of third Square= 15*15 - 10*10= 
<gadget id="calculator">15*15 - 10*10</gadget>
<output>125</output>
125 cm   So side of third square= 11.2 [because area of square = side*side]   Perimeter = 4*Side = 4*11.2= 
<gadget id="calculator">4*11.2</gadget>
<output>44.8</output>
44.8 cm   Answer:44.8 cm
<result>D</result>
The perimeters of two squares are 60 cm and 40 cm. Find the perimeter of a third square whose area is equal to the difference of the areas of the two squares?