xn0eHedward xn0eHedward

27-09-2016
Mathematics

Answered

For a trapezoid, the following formula relates the area a, the two bases a and b, and the height h. a= g (a

b./2 solve for b

Ab= ah/2-a
Bb= 2a-a/h
Cb= 2a/h a
Db= 2a/h-a

Verified Answer :

HomertheGenius HomertheGenius

07-10-2016

A - area of a trapezoid;
a, b - two bases.
A = h ( a + b ) / 2 / 2 ( we have to multiply both sides by 2 )
2 A = h *( a + b )
2 A = h a + h b
h b = 2 A - h a
b = ( 2 A - h a ) / h
b = 2 A/h - a
Answer: D )

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