Question

Fig.4 illustrates the circular disc. Which of the following is the correct answer?





a.
None of the answers is correct

b.
x^2+y^2= r^2 where r =3

c.
x^2+y^2≥ r^2 where 0≤ r ≤3

d.
x^2+y^2≤ r^2, where 0≤ r ≤3

Answer 1

Answer:

T = Math.sqrt (A*A + B*B + C*C);

Answer 2

Answer:

Conc. sulphuric acid is used as a drying agent for purifying hydrogen chloride gas.

Reason

Concentrated sulphuric acid being hygroscopic in nature absorbs moisture from the air and gets diluted and acts as a drying agent. It has a strong affinity for water and thus it absorbs water quickly.