Question

4.5×4.5 solution step by step​

Answer 1

Answer:

20.25

step by step explanation:

$4.5 \times 4.5 = 20. 25 \\ so \: the \: answer \: is \: 20.25$

Answer 2

Answer:

20.25

Step-by-step explanation:

1---. This method can only be applied on the numbers which ends with '5'

2----. Square the last digit of number 5×5=25

3-----. Add 1 in '4' and multiply with 4

4+1=5 5×4= 20

So the multiply of 45×45 is 2025

and place decimal after 2 digits

4.5×4.5=20.25