Question

Test Yourself , try question 52

Answer 1

a circle = 360*
so, 40* means 1/9th of circle
total weight of disk= 2.7
therefore, weight of 1 piece= 1/9 x 2.7
                                           = 0.3gms

that is the third option



Hope i answered it correctly.

Answer 2

Answer:

here buddy ur answers.