If the ellipse `x^2/a^(2)+y^2/b^(2)=1` is inscribed in a rectangle whose length to breadth ratio is 2 :1 then the area of the rectangle is

The perimeter of a rectangle whose length is 12m more than its breadth is 84 m. What will be the area of the rectangle? (in m^2 )

Area of a rectangle with length 4ab and breadth 6b ^(2) is

The length of a rectangle is 7.1cm and its breadth is 2.5cm. What is the area of the rectangle?

The ellipse E_(1):(x^(2))/(9)+(y^(2))/(4)=1 is inscribed in a rectangle R whose sides are parallel to the coordinates axes. Another ellipse E_(2) passing through the point (0, 4) circumscribes the rectangle R. The length (in units) of the major axis of ellipse E_(2) is

The ellipse E:(x^(2))/(25)+(y^(2))/(16)=1 is inscribed in a rectangle R whose sides are parallel to the coordinate axes. A hyperbola (with same centre and transverse axis same as major axis of ellipse) intersects the ellipse orthogonally and passes through the vertices of the rectangle.Then eccentricity of the hyperbola is

The area of a rectangle is 49cm^(2) and its breadth is 2.8cm. Find the length of the rectangle.

A wire is in the form of a square of side 18 m. It is bent in the form of a rectangle, whose length and breadth are in the ratio 3: 1. The area of the rectangle is 81\ m^2\ (b) 243 m^2 (c) 144 m^2 (d) 324 m^2

If the length and breadth of a rectangle are in the ratio 3:2 and its perimeter is 20 cm, then the area of the rectangle (in cm^(2) ) is :

If the length and breadth of a rectangle are in the ratio 3:2 and its perimeter is 20 cm, then the area of the rectangle (in "cm"^2 ) is :