72 squared

72² = 72 × 72 = 5,184

To square a number, multiply it by itself. 72 squared is written 72² or 72^2, and the answer is 5,184.

How to work out 72 squared

• Direct: 72 × 72 = 5,184.
• From the previous square: 71² = 5,041, and 72² = 5,041 + (2 × 72 − 1) = 5,041 + 143 = 5,184.
• Split the number: 72 = 70 + 2, so 72² = 70² + 2 × 70 × 2 + 2² = 4,900 + 280 + 4 = 5,184.

Related

• 72 cubed = 373,248
• The square root of 5,184 is 72, so 5,184 is a perfect square.

Squares near 72

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