- 390
- 395
- 400
- 405

Option 1 : 390

**Concept used:**

Right angle = 90°

**Calculation:**

According to the question

Number of degrees in four and one - third right angles = [4 + (1/3)] × 90°

⇒ (13/3) × 90°

⇒ 13 × 30°

⇒ 390°

**∴ The number of degrees is 390°. **

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