In the formula, area of circle = πr², the numerical constant of the expression πr² is ________. Fill in the blanks to make the statement true.
Solution:
Given, the area of circle = πr²
We have to find the numerical constant of the expression.
In algebra, a constant is a number on its own, or sometimes a letter such as a, b or c to stand for a fixed number.
In πr², the numerical constant is π.
Therefore, the numerical constant is π.
✦ Try This: In the formula, circumference of circle = 2πr, the numerical constant of the expression 2πr is ________. Fill in the blanks to make the statement true.
Given, the circumference of circle = 2πr
We have to find the numerical constant of the expression.
In algebra, a constant is a number on its own, or sometimes a letter such as a, b or c to stand for a fixed number.
In 2πr, the numerical constant is 2π.
Therefore, the numerical constant is 2π.
☛ Also Check: NCERT Solutions for Class 7 Maths Chapter 12
NCERT Exemplar Class 7 Maths Chapter 10 Problem 18
In the formula, area of circle = πr², the numerical constant of the expression πr² is ________. Fill in the blanks to make the statement true.
Summary:
In the formula, area of circle = πr², the numerical constant of the expression πr² is π.
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