Welcome to your 08 math

1. 
Find the area enclosed in the figure.
2. 
Find the smallest number by which 9720 should be divided to get a perfect square.
3. 
In India there are about 80 Million children old enough to go to school. If 16 million cannot go to school, what is this as a percentage of all the children?
4. 
If √256 ÷ √x = 2, then x = ?
5. 
Find the total surface area of the figure given below,
6. 
In the number a4b, a is the smallest two digit perfect cube and a’s unit digit exceeds b by 3. Then find the cube root of number ________
7. 
In a off season sale, A shopkeeper is giving successive discounts 30% and 40% on every item. Find the single discount equivalent to these successive discounts.
8. 
A PT teacher wishes to draw up his 1385 students in the form of a square. After arranging, he found out that some of them are left out. How many students were left out?
9. 
The length of each side of the cubical box is 2.5m, its volume is ______
10. 
If m is the cube root of n, then n is
11. 
Rectangle MNOP is made up of four congruent rectangles. If the area of one of the rectangles is 8 sq m and length is 4 m, then find the perimeter of MNOP.
12. 
A shopkeeper spends Rs. 2000 on buying stock. He sells the stock for Rs. 2800. What is his profit as a percentage of the amount he paid for the stock?
13. 
Cube root of 27² is _____
14. 
In an off season sale, a shopkeeper is giving successive discounts 20% and 20% on every item. Find the single discount equivalent to these successive discounts.
15. 
A jacket was sold for ₹1,120 after allowing a discount of 20%. The marked price of the jacket is
16. 
Find the smallest number by which 9720 should be multipled to get a perfect cube.
17. 
A rectangular park of length 70 m and breadth 50 m is there 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 cost of leveling the Crossroads at the rate of Rs.120 per square m .
18. 
If two ratios are equivalent, then the four quantities are said to be in ______.
19. 
The volume of a cylinder whose radius r is equal to its height is
20. 
A cube of side 5 cm is painted on all its faces. If it is sliced into 1 cubic centimetre cubes, how many 1 cubic centimetre cubes will have exactly one of their faces painted?