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

Let A B C D be a tetrahedron such that the edges A B ,A C and A D are mutually perpendicular. Let the area of triangles A B C ,A C D and A D B be 3, 4 and 5sq . units , respectively. Then the area of triangle B C D is a. 5sqrt(2) b. 5 c. (sqrt(5))/2 d. 5/2

Let A B C D be a tetrahedron such that the edges A B ,A C and A D are mutually perpendicular. Let the area of triangles A B C ,A C D and A D B be 3, 4 and 5sq . units , respectively. Then the area of triangle B C D is a. 5sqrt(2) b. 5 c. (sqrt(5))/2 d. 5/2

Let A B C D be a tetrahedron such that the edges A B ,A Ca n dA D are mutually perpendicular. Let the area of triangles A B C ,A C Da n dA D B be 3, 4 and 5sq. units, respectively. Then the area of triangle B C D is a. 5sqrt(2) b. 5 c. (sqrt(5))/2 d. 5/2

Let A B C D be a tetrahedron such that the edges A B ,A Ca n dA D are mutually perpendicular. Let the area of triangles A B C ,A C Da n dA D B be 3, 4 and 5sq. units, respectively. Then the area of triangle B C D is 5sqrt(2) b. 5 c. (sqrt(5))/2 d. 5/2

Let A B C D be a tetrahedron such that the edges A B ,A Ca n dA D are mutually perpendicular. Let the area of triangles A B C ,A C Da n dA D B be 3, 4 and 5sq. units, respectively. Then the area of triangle B C D is 5sqrt(2) b. 5 c. (sqrt(5))/2 d. 5/2

The areas of two similar trangles triangleABC and trianglePQR are 36 sq cms and 9 sq cms respectively. If PQ= 4cm then what is the length of AB (in cm)?

If ABCD is a tetrahedron such that each triangleABC, triangleABD and triangleACD has a right angle at A. If ar(triangle(ABC))=k_1, ar(triangleABD)=k_2, ar(triangleBCD)=k_3 , then ar(triangleACD) is

If ABCD is a tetrahedron such that each triangleABC, triangleABD and triangleACD has a right angle at A. If ar(triangle(ABC))=k_1, ar(triangleABD)=k_2, ar(triangleBCD)=k_3 , then ar(triangleACD) is

ABC is a right angled triangle whose angleA = 90^@ , AD is perpendicular on BC. Prove that (area of triangleABC)/(area of triangleACD) = (BC^2)/(AC^2) .

In the adjoining figure if AB+AC=5AD and AC-AD=8 then the area of the rectangle ABCD is