Find the area of square whose diagonal is 21√2 cm.
Acm^2$$
Bcm^2$$
Ccm^2$$
Dcm^2$$
Acm^2$$
Bcm^2$$
Ccm^2$$
Dcm^2$$
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The perimeter of an isosceles tri- angle is 544 cm and each of the equal sides is times the base . What is the area (in ) of the triangle ?