If the side of the square is increased by 30%, then how much % does its area get increased?

A circular wire of radius 42 cm is bent in the form of a rectangle whose sides are in the ratio of 6 : 5 . The smaller side of the rectangle is
 ( Take $$ π = 22\over 7$$ ) : 

The volume of the largest right circular cone that can be cut out of a cube of edge 14 cm.

A pyramid has an equilateral triangle as its base, of which each side is 8 cm. Its slant edge is 24 cm. The whole surface area of the pyramid (in cm²) is:

Cost of fencing a circular plot at the rate of Rs.15 per m is Rs.3300. what will be the cost of flooring the plot at the rate of Rs.100 per square metre?

A,B, C are three points such that AB = 9 cm, BC = 11 cm and AC = 20 cm. The number of circles passing through points A,B,C is: 

ABCD is parallelogram. P and Q are the mid points of sides BC and CD respectively. If the area of ∆ABC is 12 cm² then the area of ∆APQ is 

The length of one side of a rhombus is 6.5 cm and its altitude is 10 cm. If the length of its diagonal be 26 cm, the length of the other diagonal will be :