Missing edge from the volume, step by step
If a box holds 120 cm³ and two of its edges are 4 and 5, the third has to be 6 — because 4 × 5 × 6 is 120.
The question
cm
Missing edge of a box, volume 175
5 × 7 × x=175
5 × 7=35
175 ÷ 35=5
- The volume of a box is its three edges multiplied: length × width × height. You have the width (5), the depth (7), and the volume (175).
- Multiply the two edges you know first: 5 × 7 = 35.
- Then the missing edge is the volume divided by that: 175 ÷ 35 = 5.
How it works.
- 01
The volume of a box is its three edges multiplied: length × width × height. You have the width (5), the depth (7), and the volume (175).
- 02
Multiply the two edges you know first: 5 × 7 = 35.
- 03
Then the missing edge is the volume divided by that: 175 ÷ 35 = 5.