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morpeh [17]
3 years ago
5

two sides of a rectangular fence are 5 5/ 8 feet long. the other two sides are 6 1/4 feet long. what is the perimeter

Mathematics
2 answers:
Levart [38]3 years ago
6 0
Perimeter is how far around, so you are going to total the 2 lengths and 2 widths.  A way to write that is P=2l+2w.  

P = 2(5 5/8) + 2 (6 1/4)

2(5 5/8) = 10 10/8 or 11 2/8 or 11 1/4

2(6 1/4) = 12 1/2

P = 11 1/4 + 12 1/2

P = 23 3/4
Shalnov [3]3 years ago
3 0
The formula for the perimeter is l+l+w+w, or 2l+2w. Multiply 5 5/8 by 2 and add that with 6 1/4 multiplied by 2 and that's your perimeter! 11.25+12.5= 23.75 and that is your answer. I hope this helps :)
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A rectangular pyramid has a height of 8 meters. The base is 7 meters in length and 15 meters in width two different triangular c
vagabundo [1.1K]

Answer:

The difference in the areas of the cross section is 32 m²

Step-by-step explanation:

The given parameters are;

The height of the rectangular pyramid = 8 meters

The length of the base of the pyramid = 7 meters

The width of the base of the pyramid = 15 meters

Whereby triangular cross sections are formed through the vertex and perpendicular to the base, and to each other, we have;

The sides of the two triangles consists of the following;

1) Two slant height of the pyramid each

2) The two perpendicular lines joining the midpoints of the opposite sides of the base of the pyramid with length equal to the length of the adjacent side to the sides from which they are drawn which are 15 meters and 7 meters

3) The two lines and the corresponding slant height form triangles cross section which are perpendicular to each other.

the slant height, h_l, is given as follows;

h_l = √(8² + (15/2)²) ≈ 10.966

For the triangular cross section with base = 15 m

The area of the cross section = 1/2 × Base₁₅ × Height = 1/2 × 15 m × 8 m = 60 m²

For the triangular cross section with base = 7 m

The area of the cross section = 1/2 × Base₇ × Height = 1/2 × 7 m × 8 m = 28 m²

The difference in the areas of the cross section = 60 m² - 28 m² = 32 m².

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3 years ago
What is 35% written as a fraction ?
Serga [27]

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35/100

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Vlad1618 [11]

Answer:

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Step-by-step explanation:

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Novay_Z [31]

Answer:

Hence the expression $$(3rs-7)(3rs-4)=9r^2s^2-33rs+28$$

Step-by-step explanation:

Explanation

  • The given expression is (3rs-7)(3rs-4).
  • We have to multiply the given expression.
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$$\begin{matrix}{} & {} & {} & {} & 3rs & - & 7 \\ \times & {} & {} & {} & 3rs & - & 4 \\ \end{matrix}$$

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$$\begin{matrix}{} & {} & {} & - & 12rs & + & 28 \\ {} & {} & 9{{r}^2}{{s}^2} & - & 21rs & {} & {} \\ \end{matrix}$$

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$$\begin{matrix}{} & {} & 9{{r}^2}{{s}^2} & - & 33rs & + & 28 \\ \end{matrix}$$

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Replace x with 1/2 and solve.

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