is my calculation in the final answer right 150 As 5X 36 2o

is my calculation in the final answer right ?

150 As- 5X 36 2oo )ind-L & Before cracking : 2 9 Centroaidl sec |213 5.9 | 680|14535612 2 70 35612 321375 21315.9 -= 12to35612 395.3 mm

Solution

Before cracking,

Acr= 1•47×10^8 square mm

Fie= 3•72×10^(-7)\'ll

After cracking,

Acr= 1•47×10^9 square mm

Fie= 6•26×10^(-7)mm