The length of diagonal of a square is $${15\sqrt { 2}}$$cm. Its area is

The difference between the length and breadth of a rectangle is 23 m. If its perimeter is 206 m, then its area is

A prism and a pyramid have the same base and the same height. Find the ratio of the volumes of the prism and the pyramid.

If in a triangle the circumcentre, incentre, centroid and orthocentre are at the same place, then what will that triangle be like?

The sides of a triangle are in the ratio 2 : 3 : 4. The perimeter of the triangle is 18 cm. The area (in cm²) of the triangle is

Two circles of radii 4 cm and 9 cm respectively touch each other externally at a point and a common tangent touch them at the points P and Q respectively. Then the area of square with one side PQ, is:

If the area of a circle is 154 m² then its radius will be 

The length and the breadth of a rectangle are made to increase and decrease, respectively, by 8% and 10%. What is the percentage increase or decrease in its area?