What is the area of the shaded region?
2 answers:
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Answer:
The actual dimension is 18.28 by 3.28
Step-by-step explanation:
Given
Dimension:
Required
Determine the quadratic equation and get the possible values of x
Solving (a): Quadratic Equation.
The cardboard is rectangular in shape.
Hence, Area is calculated as thus:
Open Bracket
Subtract 60 from both sides
<em>Hence, the above represents the quadratic equation</em>
Solving (b): The actual dimension
First, we need to solve for x
This can be solved using quadratic formula:
Where
So:
Split:
or
or
or
But length can't be negative;
So:
The actual dimensions: is
<em>The actual dimension is 18.28 by 3.28</em>