If area of a triangular face BCD of a regular tetrahdedron ABCD is 4sqrt(3) sq. units, then the ...

If |z|=r. Area of the triangle whose vertices are z,wz and z+wz is 4sqrt(3) sq.units then the value of r is

If the area of the triangle is 4sq units, then x is

A tetrahedron has 3 triangular faces and 1 rectangular face.

The lengths of two adjacent sides of a cyclic quadrilateral are 2 units and 5 units and the angle between them is 60^(@) . If the area of the quadrilateral is 4sqrt(3) sq. units, then the perimeter of the quadrilateral is

In the given figure, A B C D is a rectangle with A D=4 units and A E=E BdotE F is perpendicular to D B and is half of D F . If the area of the triangle D E F is 5 sq. units, then what is the area of A B C D ? 18sqrt(3) sq. units (b) 20 sq. units (c) 24 sq. units (d) 28 sq. units

Let ABCD be a tetrahedron such that the edges AB, AC and AD are mutually perpendicular. Let the area of triangleABC, triangleACD and triangleABD be 3, 4 and5 sq. units, respectively. Then, the area of the triangleBCD . Is

The volume of a regular tetrahedron ABCD is 120 cubic units and area of the base of triangle ABC is 20 sq. units. Then the vertical height of tetrahedron from triangular base ABC to the point D is

If the area of the triangle formed by the points (1,2) , (2,3) , (x,4) is 40 sq.units, then x is

If the area of the triangle formed by the points (1,2),(2,3),(x,4) is 40 sq.units,then x is

Area of a regular polygon of n sides is given by A= n(sqrt(3))/(4)a^(2)sq . Units . Make 'a' the subject of the formula and find 'a' if the area of a hexagon is 54sqrt(3) sq. units.