Welcome to your 08 math

1. 
√31684 = ?
2. 
Find the smallest number by which 9720 should be multiplied to get a perfect square.
3. 
The sum of successive odd numbers 1, 3, 5, 7, 9, 11, 13 and 15 is
4. 
∛19683= ? ×3
5. 
6. 
The ratio of the length and breadth of a plot is 3:2. If the breadth is 40 m less than the length, what is the perimeter of the plot?
7. 
The surface area of the three coterminus faces of a cuboid are 6, 15 and 10 cm² respectively. The volume of the cuboid is
8. 
Which of the following will have 4 at the units place?
9. 
Find the side of a cubical box whose volume is 125m³
10. 
If the side of a cube is doubled then its volume will become ______ times.
11. 
Find the smallest number by which 9720 should be divided to get a perfect square.
12. 
Radhika bought a car for Rs 2,50,000. Next year its price decreased by 10% and further next year it decreased by 12%. In the two years overall decrease per cent in the price of the car is
13. 
The length of each side of the cubical box is 2.5m, its volume is ______
14. 
4 squares each of the side 10 cm have been cut from each corner of a square sheet of paper of size 100 cm x 100 cm. From the remaining piece of paper, an isosceles right triangle is removed whose equal sides are each of 10 cm length. Find the area of the remaining part of the paper.
15. 
Find the area enclosed in the figure.
16. 
17. 
If a number has one zero at its end, then its cube will have _____ zeros at the end.
18. 
A rectangular park of length 70 m and breadth 50 m in a locality. Two crossroads perpendicular to each other of width 6 m needs to be constructed in between the park for walking. Find the area of Crossroads.
19. 
20. 
Given that √4096 = 64, the value of √4096 + √40.96 is