Question

Please answer I will mark u brainleast

Answer 1

1)
answer is B
          (2+6) 4
A = ------------------
             2

2)
5^2 - 4^2
= 25 - 16
= 9

√9 = 3
other base = 3 + 3 + 3 = 9

so 
A = (3 + 9)(4) / 2
A = 24

Answer
24 cm^2