PLS HELP ME ASAP PLS ILL MARK BRAIN

Step-by-step explanation:

1). Let the circumference C and area A of the circle are proportional,

   C ∝ A

   C = kA

   Here k = proportionality constant

   k =

   From the given table,

   For C = 25 cm, A = 50 cm²

   Then the value of k =

                                  k =

    For C = 50 cm, A = 201 cm²

    k = ≈

    In both the cases proportionality constant is giving the different values.

    Therefore, Circumference and Area of the circular objects are not proportional.

2). If A =

    Then this equation will be true for all the values of r and C given in the table.

    For r = 4 cm and C = 25 cm

    A = = 50 cm²

    For r = 8 cm and C = 50 cm

    A =

    A = 200 cm²

    True for all values of 'r' and 'C'.

step-by-step explanation:

1. practice, practice & more practice

2. review errors

3. master the key concepts

do not try to memorise the processes.

4. understand your doubts.

5. create a distraction free study environment

6. create a mathematical dictionary

7. apply maths to real world problems.

not sure but it may be b, as i said i'm not sure.