TatyanaJohnson22
TatyanaJohnson22 TatyanaJohnson22
  • 01-11-2018
  • Mathematics
contestada

The area, A, of a trapezoid is calculated using the formula A=1/2(b+c) how do I get b alone

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trevordoyleione
trevordoyleione trevordoyleione
  • 01-11-2018

A=1/2(b+c)

x2       x2    times by 2

2A  = b + c  

- c       -c     subtract c

2A - c = b

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