If a rectangle has area 24 and width 3, what is its length?

If a rectangle has area 24 and width 3, what is its length?

• A. 6
• B. 12
• C. 24
• D. 8

Answer: (D)

The area of a rectangle comes from multiplying its length by its width. With an area of 24 and a width of 3, the length must be found by 24 divided by 3, which equals 8. So the length is 8. If you try other lengths, they’d give different areas (for example, length 6 would give area 18, length 12 would give 36, length 24 would give 72), so only 8 produces the given area.

The area of a rectangle comes from multiplying its length by its width. With an area of 24 and a width of 3, the length must be found by 24 divided by 3, which equals 8. So the length is 8. If you try other lengths, they’d give different areas (for example, length 6 would give area 18, length 12 would give 36, length 24 would give 72), so only 8 produces the given area.