Question

IV. ANSWER THE FOLLOWING: (Graph ) 1x8 =8

20. Varshika drew 6 circles with different sizes. Draw a graph for the relationship between the diameter

and circumference of each circle as shown in the table and use it to ( i ) . find the circumference of a

circle when its diameter is 6 cm. (ii ). Identify the type of variation .

Diameter (x) cm 1 2 3 4 5

Circumference (y) cm 3.1 6.2 9.3 12.4 15.5

21. The following table shows the data about the number of pipes and the time taken to till the same tank

No.of pipes (x) 2 3 6 9

Time taken (in min) (y) 45 30 15 10

Draw the graph for the above data and hence

( i ). Find the time taken to fill the tank when five pipes are used

(ii ). Find the number of pipes when the time is 9 minutes .

……………………………………………………………………………………………………………………​

Answer 1

Answer:

ANSWER THE FOLLOWING: (Graph ) 1x8 =8

20. Varshika drew 6 circles with different sizes. Draw a graph for the relationship between the diameter

and circumference of each circle as shown in the table and use it to ( i ) . find the circumference of a

circle when its diameter is 6 cm. (ii ). Identify the type of variation .

Diameter (x) cm 1 2 3 4 5

Circumference (y) cm 3.1 6.2 9.3 12.4 15.5

21. The following table shows the data about the number of pipes and the time taken to till the same tank

No.of pipes (x) 2 3 6 9

Time taken (in min) (y) 45 30 15 10

Draw the graph for the above data and hence

( i ). Find the time taken to fill the tank when five pipes are used

(ii ). Find the number of pipes when the time is 9 minutes .