Question

Maths, dont spam plz !!

Answer 1

Answer:

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Step-by-step explanation:

$A = \frac{h}{2} (a + b) \\ = > 2A = h(a + b) \\ = > \frac{2A}{h} - a = b \\ = > b = \frac{2A}{h} - a$

option 2 is the correct answer

Answer 2

Answer:

b= 2A/h-a

Step-by-step explanation:

A=h/2(a+b)

2A=(ha+hb)

hb=2A-ha

b= 2A/h-a