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
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STEP 1
Mean =
STEP 2
Subtract the mean from each data value then square the answer
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STEP 3
Add the squared answers in STEP 2 then find the mean
STEP 4
Square root the answer in STEP 3
Standard deviation is 236.5
Mean =
STEP 2
Subtract the mean from each data value then square the answer
STEP 3
Add the squared answers in STEP 2 then find the mean
STEP 4
Square root the answer in STEP 3
Standard deviation is 236.5