The length of a rectangle is three- fifth of the radius of a circle. The radius of the circle is equal to the side of a square whose area is 6400 $$m^{2}$$. The area (in $$m^{2}$$) of rectangle, if the breadth is 20 m is:
Given,Â
Area of square =Â 6400 $$m^{2}$$ (given)
We know,Â
Area of square =Â $$\left(side\right)^2$$
$$\therefore\ side\ =\ \ \ \sqrt{\ 6400}=80\ m$$
Side of square = radius of circle (given)
radius = 80 cm
Now, Length of rectangle = three-fifth of radius of circle
l =Â $$\frac{3}{5}\times\ 80=48\ m$$
b = 20 m (given)
Area of rectangle =Â $$l\times\ b$$
=Â $$48\times\ 20=960\ m^2$$
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