Question 96231
ex. A square has a perimeter of 28 feet. Find the length of each side.
1st: Draw a picture of a square (rectangle with all sides equal)
Label each side "x".
EQUATION:
Perimeter is the distance around the square:
4x = 28
Divide both sides by 4 to get:
x = 7 ft (lenght of each of the sides)
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ex. A triangle has a perimeter of 23 inches. The medium side is 3 inches more than the shortest side, and the longest side is twice the shortest side. Find the shortest side.
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Draw a triangle.
Label the shortest sides "x".
Label the longest side "2x"
Label the remaining side "x+3".
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EQUATION:
The perimeter is the sum of the sides:
x + 2x + x+3 = 23
Simplify the equation:
4x+3 = 23
Subtract 3 from each side to get:
4x = 20
Divide both sides by 4 to get:
x = 5 (length of shortest side)
x+3 = 5+3 = 8 (length of 2nd side)
2x = 2*5 = 10 (length of the longest side)
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Cheers,
Stan H.