1,A circular cynlinder with a volume 81 pi.if the perimeter of the base is 6 pi,the height is ?

2,The total surface area of 2 indentical blocks which together with the volume is 1,458 units is ?

3,If one side of 6-inch ruler will be marked in inches,how many points will be in the edge including 0 and 6 inch mark?

4,Two sides of the O and P pointer that started from a vertical position as shown.Pointer O turns back the clock with a speed of 5 degrees per second and pointer P rotate clockwise at9 degrees per second.How many complete revolutions will be made when completing 335 P O complete revolution?

5,In a certain game of 50 questions,the final score calculated by subtracting tiwce the number of wrong answer from the total number of correct answers.if a player has tried all questions and get a final score of 35 ,the number of wrong answers,he has to be ...

Question 1: Find the highest common factor of 147x and 98y if HCF(x;y)=1.
Question 2: In a magic triangle, each of the six whole numbers 10; 11; 12; 13; 14; 15 is placed in one of the circles so that the sum, S, of the three numbers on each side of the triangle is the same. The largest possible value for S is______

Question 3: A pattern of triangle is made from matches shown as follows:

If there 2017 matches used, how many triangles has been formed?

P/s: Please help me! If possible, write the detail answer! Thanks for your help!!!