The radii of two concentric circles are x cm and 26 cm. P and S are the points on larger circle and Q and R are points on smaller circle. If PQRS is a straight line and QR = 40cm and PS = 48cm, then what is the value of x ? (x < 26cm)
\(12\sqrt{5}\,\text{cm}\)
\(10\sqrt{5}\,\text{cm}\)
\(11\sqrt{5}\,\text{cm}\)
\(9\sqrt{5}\,\text{cm}\)
The bar graph given below shows the production of refrigerator by 6 companies.
The production of refrigerator by A is what percent of the production of refrigerator by E ?
The table given below shows the sales of two companies in 5 years.
| Years | Companies | |
| A | B | |
| P | 350 | 1150 |
| Q | 550 | 850 |
| R | 750 | 950 |
| S | 650 | 350 |
| T | 450 | 250 |
L1 = The difference between the total sales of A and B in all years.
L2 = The value of average sales of A in all years.
What is the value of (L1 : L2) ?
If total surface area of a cube is 384 cm2 , then what is the volume of cube ?