Final answer:
To find the height of the wood block, use the formula: height = Volume / (length x width). Without the length value, the exact height cannot be determined. The height would be 4 cm.
Step-by-step explanation:
To find the height of the wood block, we can use the formula for volume: Volume = length x width x height. Given that the volume is 40 cm³ and the width is 5 cm, we can rearrange the formula to solve for the height: height = Volume / (length x width). Substituting the values, we have height = 40 cm³ / (5 cm x length).
Since the length is not given in the question, we cannot determine the exact height of the wood block without more information about the length. However, we can calculate the height for different lengths. For example, if the length is 2 cm, then the height would be 40 cm³ / (5 cm x 2 cm) = 4 cm.