Question

Solve the formula for b2.


Area of a trapezoid: A=12h(b1+b2)

Answer 1

Answer:

by transposition method we can solve these type of questions

Answer 2

Answer:

Solve the formula for $\[{b_2}\]$.

Area of a trapezoid: $\[A = \frac{1}{2}h\left( {{b_1} + {b_2}} \right)\]$

Solution:

Simplify the equation for $\[{b_2}\]$,

$\[ \Rightarrow A = \frac{1}{2}h\left( {{b_1} + {b_2}} \right)\]$

$\[ \Rightarrow 2A = h\left( {{b_1} + {b_2}} \right)\]$

$\[ \Rightarrow \left( {{b_1} + {b_2}} \right) = \frac{{2A}}{h}\]$

$\[ \Rightarrow {b_2} = \frac{{2A}}{h} - {b_1}\]$

Hence, $\[{b_2} = \frac{{2A}}{h} - {b_1}\]$