Identity the constants numerical coefficients, and variables in the expression $\pi \mathrm { r }$ .
A) r, variable
B) $\pi$ , constant and numerical
C) $\pi$ , constant and numerical coefficient: r, constant
D) $\pi$ , constant and numerical coefficient: r, variable
E) data insufficient

Question

Quizplus · Accepted Answer

- $\pi$ is a constant and also acts as a numerical coefficient because it multiplies the variable r.
- r is a variable because its value can change. 
Therefore, the constants are $\pi$, the numerical coefficient is also $\pi$ and the variable is r.

Identity the Constants Numerical Coefficients, and Variables in the Expression πr\pi \mathrm { r }πr

Identity the Constants Numerical Coefficients, and Variables in the Expression $\pi \mathrm { r }$