Question

select the correct answer hurry has 81 red balls what she wants to arrange in rows is the number of balls and which will not be equal to the number of rows how many balls must there be in a row

Answer 1

Given

81 red balls

Number of balls per row = Number of rows

Procedure

b = Number of balls

r = Number of rows

T = Total number of balls

b = r

$\begin{gathered} T=b\cdot r \\ Given\text{ b=r} \\ T=b^2 \\ b=\sqrt[]{T} \\ b=\sqrt[]{81} \\ b=9 \end{gathered}$

The answer is:

Number of rows = 9

Number of balls = 9