Fill in the blanks to make the statements true.In the formula, area of circle = πr2, the numerical constant of the expression πr2 is _____ .

ππ is constant and other are variables.

Q18 of 100 Page 312

Fill in the blanks to make the statements true.
In the formula, area of circle = πr², the numerical constant of the expression πr² is _____ .

π is constant and other are variables.

The length of a side of square is given as 2x + 3. Which expression represents the perimeter of the square?

Fill in the blanks to make the statements true.

Sum or difference of two like terms is ______ .

Fill in the blanks to make the statements true.

3a²b and –7ba² are _____ terms.

Fill in the blanks to make the statements true.

–5a²b and –5b²a are ______ terms.