Round to the nearest ten thousand then subtract

I believe it is 40,000.

Step-by-step explanation:

62,251 to the nearest 10,000 is 60,000 and 21,123 to the nearest 10,000 is 20,000. 60,000-20,000=40,000.

the correct answer is 45x

9×5=45 then add the x

30 units^2

step-by-step explanation:

area is l × w

the length is 3

and the width is 10

3 × 10= 30 units squared