The length of the entire rubber bumper is 12 Feet.
What is area and perimeter of rectangle?
The perimeter P of a rectangle is given by the formula, P=2l + 2b , where l is the length and w is the width of the rectangle.
The area A of a rectangle is given by the formula, A=l x b , where l is the length and w is the width.
According to the question,
The dimensions of the rectangular table are
\((2x^{2} - 16 ) , (- x^{2} + 4 x + 1 )\)
Total perimeter of table:
\(2( 2x^{2} - 16 ) + 2( - x^{2} + 4 x + 1 )\)
\(= 4 x^{2} - 32 - 2 x^{2} + 8 x + 2\)
\(= 2 x^{2} + 8 x - 30\)
Now , Put x = 3
\(= 2*3^{2} + 8*3 - 30\)
\(= 18 + 24 - 30\)
\(= 12 Feet\)
So , the Length of the entire rubber bumper is 12 Feet.
Learn more perimeter and area of rectangle here:
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