What is the area of a rectangle with length 8 cm and width 3 cm?

To find the area of a rectangle, you multiply its length by its width. In this case, the length is 8 cm and the width is 3 cm.

Calculating this, you have:

Area = Length × Width

Area = 8 cm × 3 cm

Area = 24 cm².

This calculation shows that the area of the rectangle is indeed 24 cm². Thus, the correct choice reflects the proper application of the formula for the area of a rectangle, concluding that the area is 24 cm².