Calculate Total Edge Length: 7cm Cube Edge Measurement Problem

To solve this problem, we'll follow these steps:

• Step 1: Recall that a cube has 12 edges.
• Step 2: Use the formula for the sum of the lengths of cube's edges: $12 \times \text{edge length}$.
• Step 3: Perform the calculation using the given edge length of 7 cm.

Now, let's work through each step:
Step 1: A cube has a total of 12 edges.
Step 2: Using the formula, the sum of the lengths of the edges is $12 \times 7$.
Step 3: Calculating this gives us $12 \times 7 = 84$ cm.

Therefore, the sum of the lengths of the edges of the cube is $84$ cm.