Maths-

General

Easy

Question

# Find the distance between points A and B:

(20,40)A (40,60)B

- 2 √10
- 7 √20
- 3√10
- 20 √2

## The correct answer is: 20 √2

### 20 √2

d = √[(x2 − x1)^{2} + (y2 − y1)^{2}]

d = √[(40 – 20)^{2} + (60 – 40)^{2}]

d= √[20*20 + 20*20]

d = √800 =20 √2

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