Question

A=1/2h(b1+b2)\
help a brother out

Answer 1

Hey mate!!

The formula for the area of a trapezoid is

✒ A = 1/2h (b1 + b2).

Solution :-

$\bold{A = \frac{1}{2} h(b 1 + b2)}$

$\bold{\underline{Multiply\: both\: sides\: by \:2\::}}$

$\bold{2 A = h(b1 + b2) }$

$\bold{\underline{Multiply\: both \:sides \:by \:\frac{1}{h} \::}}$

$\bold{ \frac{2 A }{h} =( b1 + b2)}$

$\bold{\underline{Add\: -b2 \:both\: sides\: :}}$

$\bold{b1 = \frac{2A}{h} -b2}$

$\bold{\underline{John :}}$

$\bold{e {}^{i\pi} + 1 = 0 }$

Thanks for the question!

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