If a rectangle has a length of 10 and a width of 3, what is its area?

To find the area of a rectangle, you can use the formula: area = length × width.

In this case, the given length is 10 and the width is 3. By substituting these values into the formula, you calculate the area as follows:

Area = 10 × 3 = 30.

Thus, the area of the rectangle is 30, making the chosen answer correct. This calculation is fundamental in geometry and is applicable to any rectangle, reinforcing the importance of understanding how to apply the area formula accurately.