Welcome to your 08 math

1. 
The given figure shows a photograph mounted on a rectangle frame. The area of the photograph is
2. 
The sum of successive odd numbers 1, 3, 5, 7, 9, 11, 13 and 15 is
3. 
One day the temperature in London is 18ºC and in Athens it is 80% higher. What is the temperature in Athens?
4. 
A rectangle measures 8 cm on length and its diagonal measures 10 cm. What is the perimeter of the rectangle?
5. 
Dolo 500 mg has a half-life of two hours. This means that every two hours, half of the amount of the medicine is available in the bloodstream. The Dolo is effective only when more than 100 mg is in the bloodstream. If the first dose is given at 8:00 a.m., when should the next dose be given?
6. 
Find the value of
7. 
Rishi sold his television set for Rs. 2560, thereby losing 20% on what he paid for it. What did he pay for it?
8. 
The model below represents √36 = 6 Which arrangement of small squares can be used to model a large square that represents √324?
9. 
Which of the following is a square of an even number?
10. 
A man whose income is Rs. 40,000 spends Rs. 12,000 on rent. What percentage of his income is spent on rent?
11. 
If by selling a cycle for ₹3600/-, a shopkeeper loses 10%. What is the actual price of the cycle?
12. 
42√? + 32√? = 320
13. 
∛(125/216) = ?
14. 
The area of a triangle is x cm² and base is b cm. What is the height of the triangle
15. 
Seema’s income is ₹1,60,000 per year. She pays 15% of this as house rent and 10% of the remainder on her child’s education. The money left with her is :
16. 
What will be the area of the largest square that can be cut-out of a circle of radius 20 cm?
17. 
What is the area of the largest triangle that can be fitted into a rectangle of length l units and width w units?
18. 
Whcih are not perfect square in the following
19. 
The volume of a cube whose edge is 3x is
20. 
A covered wooden box has the inner measures as 115cm, and 35cm and thickness of wood as 2.5cm. The volume of the wood is