Which step is wrong
1 pound = 100 penny
= 10 penny x 10 penny
= 1/10 pound x 1/10 pound
= 1/100 pound
= 1 penny

=> 1 pound = 1 penny

10 penny x 10 penny is incorrect = 100 penny^2

Step-by-step explanation:

We know that

1 pound = 100 penny

Factor 100 into 10 *10

               = 10 * 10 penny

10 penny * 10 penny = 100 penny^2

it's both, now can you answer my most recent question?