If the perimeter of a rectangle is 24cm with length being twice as its breadth, find its area.

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?

Balls of marbles of diameter 1.4 cm are dropped into a cylindrical beaker containing some water and fully submerged. The diameter of the beaker is 7 cm. Find how many marbles have been dropped in it if the water rises by 5.6 cm?

The largest and the second largest angle of a triangle are in the ratio of 13:12 respectively. The smallest angle is 20% of the sum of the largest and the second largest angles. What is the sum of the smallest and the second largest angles?

Three circles of radius 3.5 cm each are placed in such a way that each touches the other two. The area of the portion enclosed by the circles is 

The circumference of a circle is 792 m. What will be its radius?

The perimeter of the five squares is 24 cm, 32 cm, 40 cm, 76 cm, and 80 cm, respectively. What will be the perimeter of a square whose area is equal to the sum of the area of these squares?

The area of a rhombus is 216 cm² and the length of its one diagonal is 24 cm . The perimeter ( in cm ) of the rhombus is