Question

please answer the question please

Answer 1

Given,
AD= 45cm
AC= 20cm
BD= 30cm

If we subtract length of AD with length of AC we would get length of CD:-

AD-AC=CD
45-20=25

Therefore CD=25cm

Now, if we subtract the length of AD with the length of BD we would get length of AB:-

AD-BD=AB
45-30=15

Therefore AB=15cm

So, AB+CD=15+25= 40cm

Option-(3)

Hope this helps you!