4×10 to the 5th power in standard notation

Yo y do yall have 2 stars that means yall wrong bro

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

Atheater wants to build movable steps that they can use to go on and off the stage. they want the steps to have enough space inside so they can also be used to store props. how much space is inside the steps?