The answer is option A because the rectangles formed will be of length 1 and 7, 2 and 6, 3 and 5, 4 and 4. Since the sum of these is 8 and perimeter=2(l+b) thus 2(8) = 16
In the first triangle,
root of 1=1
root of 16=4
root of 9=3
therefore,the number inside is 143
In the second triangle,
root of ?=2
root of 9=3
root of 36=6
Therefore,the ? represents the square of 2,that is,4
ANS:4