Which option equals 7 cubed?

Which option equals 7 cubed?

• A. 344
• B. 216
• C. 512
• D. 343

Answer: (D)

Exponentiation with a cube means multiplying a number by itself three times. For seven cubed, multiply 7 by 7 to get 49, then multiply by 7 again to get 343. So seven cubed equals 343. Among the options, 343 matches exactly. The other numbers are nearby cubes or not cubes at all: 216 is 6 cubed, 512 is 8 cubed, and 344 is not a perfect cube (it's just 343 plus 1).

Exponentiation with a cube means multiplying a number by itself three times. For seven cubed, multiply 7 by 7 to get 49, then multiply by 7 again to get 343. So seven cubed equals 343. Among the options, 343 matches exactly. The other numbers are nearby cubes or not cubes at all: 216 is 6 cubed, 512 is 8 cubed, and 344 is not a perfect cube (it's just 343 plus 1).