Question

Can someone please help me solve for b1: A=(b1+b2/2)h

Answer 1

it is like the formula of area of trapezium, right ?

Answer 2

yes

Answer 3

well, so we have an equation :
A=((b1+b2)/2)h
first, multiply by 2 to both sides giving us;
2A = (b1+b2)h
then divided by h to both sides :
2A/h = b1 + b2
and the last step, subtracted by b2 to both sides :
2A/h - b2 = b1

Answer 4

Thank You

Answer 5

you're welcome