It would help if you could specify what the area is in total, in order to find the perimeter with a variable.
Answer:
Answer is 3x
Step-by-step explanation:
2radical 10 for simplifying radical 40
The equation is already is slope intercept form where you can easily point out the gradient, or the slope, and the y intercept.
y=mx+b where m is the gradient, and b is the y intercept.
Since there is no m, the gradient is 1.
The y intercept had x=0 and y=b
b in this case is 6
the y intercept= (0,6)
Area of the trapezium = 1/2(18 + 6) x 12
Area of the trapezium = 144 in²
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Answer: Area = 144 in²
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