What is the area of a trapezoid ABCD with bases AB and CD
2 answers:
If you draw a perpendicular to CD from point A or point B, you will create a right triangle with one leg 5 and hypotenuse (BC or DA) 13. The other leg of this triangle is the height of the trapezoid:
... h = √(13² -5²) = 12
The area is this height multiplied by the average base length:
... Area = (12 cm)×(10 cm +20 cm )/2 = 180 cm²
You might be interested in
Answer:
b. 2
Step-by-step explanation:
The standard error of the sample mean is the standard deviation of the sample divided by the square root of the size of the sample.
In this problem, we have that:
Sample standard deviation of 14, sample size of 49.
So
So the correct answer is:
b. 2