A square has a perimeter of 36 millimeters. What is the area of the square?

Mathematics

2 answers:

Scrat [10]3 years ago

8 0

Answer:

The area is 81 mm^ 2 or 81 mm squared

REMEMBER TO PUT THE UNIT

Step-by-step explanation:

Area of a sqaure is s^2 or s x s

First you need to know the perimeter, 36 mm

Each side is 9 mm because 36/4 is 9.

Then Substitute and calculate:

s^2

9^2

81 mm squared

s x s

9 x 9

81 mm squared

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olchik [2.2K]3 years ago

5 0

Answer:81

because god made it that way

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A coach purchases 47 hats for his players and their families at a total cost of $302. The cost of a small hat is $5.50. A medium

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Answer:

The answer is below

Step-by-step explanation:

Let x represent the number of small hat purchased, y represent the number of medium hat purchased and z represent the number of large hat purchased.

Since a total of 47 hats where purchased, hence:

x + y + z = 47 (1)

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Represent equations 1, 2 and 3 in matrix form gives:

$\left[\begin{array}{ccc}1&1&1\\5.5&6&7\\-3&1&0\end{array}\right] \left[\begin{array}{c}x\\y\\z\end{array}\right] = \left[\begin{array}{c}47\\302\\0\end{array}\right] \\\\\\\\ \left[\begin{array}{c}x\\y\\z\end{array}\right] =\left[\begin{array}{ccc}1&1&1\\5.5&6&7\\-3&1&0\end{array}\right] ^{-1} \left[\begin{array}{c}47\\302\\0\end{array}\right] \\\\\\ \left[\begin{array}{c}x\\y\\z\end{array}\right] = \left[\begin{array}{c}6\\18\\23\end{array}\right]$