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robert7248
28.06.2019 •
Mathematics
The area of a trapezoid is given by the formula a = 1 2 h(b + b). solved for b, this formula becomes b =
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Ответ:
b = (2A - hB)/h
Step-by-step explanation:
See , we know area of a trapezoid is equal to 1/2*(sum of parallel sides)* perpendicular distance between parallel sides.
Here B and b are parallel sides which we know by comparing the equation.
And 'h' here is the perpendicular distance between parallel sides.
We have to write the equation in terms of one of the parallel sides 'b'
Our formula is A = 1/2*h*(B+b)
I.e. 2A = h*(B+b) (Multiplying both sides by 2)
I.e. 2A - hB = hb
I.e. b = (2A - hB)/h
Hope it helps!!!
Ответ:
None of them have perpendicular lines except for the blue one if I am seeing right.