math see you are a genuis or not in math

1) The diagram shows a glass cone with a cylindrical hole in the middle. The radius of the hole is 1/5 the radius of the cone. How much glass was used to make the cone, with a hole in the middle, as shown in the diagram?















2) Find y


2 B -2
A -1 C
0 1 -4

3) on the diagram above find A,B, and C

17 X 7
12 22 Z
W Y 27

4) on the diagram above find W,X,Y,Z












5) find h















6) find D









7) The South America Amazon River is about 4000mi. How many feet is the Amazon River?

8)write as a power of 10.
A nanosecond is 0.000000001 of a second

9) When a cricket chirps n times per minute, you can find the temperature F in F= n/4 + 37. Write down a formula to find the number of times a cricket chirps per minute when you know the temperature.

10) A ball is dropped from a height of 64 ft. Each bounce the ball reaches a height that is half the height of the previous bounce. After which bounce will the ball rebound to a maximum height of 6 in ?

11) Elizabeth visits her friend Andrew and then returns home by the same route. She always walks 2km/h when going uphill, 6km/h when going downhill and 3km/h when on level ground. If her total walking time is 6 hours, then what is the total distance she walks in km?

12) Flora had an average of 56% on her first 7 exams. What would she have to make on her eighth exam to obtain an average of 60% on 8 exams?

13) Ian was entering a Math contest for Grade 9. He was working on this particular problem. He was having difficulty with the answer. This was the problem: The integers greater than 1 are arranged, four in each row, in 5 columns, as follows:

a b c d e

2 3 4 5

9 8 7 6

10 11 12 13

17 16 15 14


If he followed the pattern what column would the number 1002 fall in?

14)Stephanie wasn't very keen on Algebra. Her teacher gave her an Algebra problem and told Stephanie to solve it. She was having problems, can you help her?

3x + 7 = x2 + k = 7x + 15
What is the value of k?


15)Why 1 + 1 = 2?