What is the Square Root of 400?
Instant answer with step-by-step solution
√400 = 20
√400 = 20
✓ 400 is a perfect square
Step-by-step explanation
- We need to find √400 — a number that when multiplied by itself equals 400.
- Check: is 400 a perfect square? Yes — because 20 × 20 = 400.
- Therefore √400 = 20
- Verification: 20² = 20 × 20 = 400 ✓
- 400 is a perfect square. Its square root is a whole number.
Try another number
√
=