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Rasek [7]
3 years ago
6

A rectangle has side lengths of 1 3/4 feet and 2 1/3 feet. Find the perimeter of the rectangle. Write your answer as a mixed num

ber in simplest form.
Mathematics
2 answers:
katovenus [111]3 years ago
7 0

Answer:

8 feet

Step-by-step explanation:

Rectangles have congruent opposite side lengths. This means that if one of its longer sides were 2 1/3 feet and one of its shorter sides were 1 3/4 feet then the other longer side would also be 2 1/3 feet and the other shorter side would be 1 3/4 feet.

Therefore to find the perimeter, you would take the given side lengths and multiply them each by 2 to account for both of the congruent sides.

  • 2(2 1/3) + 2(1 3/4) = perimeter of rectangle

To multiply these fractions they would have to be converted into improper fractions. Multiply the whole number by the denominator and add the numerator---keeping the denominator the same in the converted form.

  • 2 1/3 ⇒ 7/3
  • 1 3/4 ⇒ 7/4

Now you can multiply these fractions by 2. Multiply the numerators by 2 and keep the denominator the same.

  • 2(7/3) + 2(7/4)
  • 14/3 + 14/4

To add them they should have common denominators so multiply 14/3 by 4/4 and 14/4 by 3/3.

  • 14/3 (4/4) = 56/12
  • 14/4 (3/3) = 42/12

Add 54/12 and 42/12 together by combining the numerators and keeping the denominators the same.

  • 54/12 + 42/12 = 96/12

You can simplify this improper fraction even more by dividing 96 by 12 since 12 is a factor of 96.

  • 96/12 = 8

The perimeter of the rectangle is 8 feet.

Romashka-Z-Leto [24]3 years ago
6 0

Answer:

The perimeter of given rectangle is 8\frac{1}{6}\text{ feet}.

Step-by-step explanation:

We are given the following information in the question:

Width of rectangle =

1\displaystyle\frac{3}{4}\text{ feet}

Length of rectangle =

2\displaystyle\frac{1}{3}\text{ feet}

Formula:

Perimeter of rectangle =

2\times (\text{Length + Width})

Putting the values:

2\times (1\displaystyle\frac{3}{4} + 2\frac{1}{3})\\\\=2\times (\frac{7}{4} + \frac{7}{3})\\\\=2\times (\frac{21+28}{12})\\\\=2\times \frac{49}{12}\\\\=\frac{49}{6}\\\\=8\frac{1}{6}

Hence, the perimeter of given rectangle is 8\frac{1}{6}\text{ feet}.

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