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**Formula =**

**1. Perimeter of Semi Circle = r(pie + 2)**

**2. Area of Semi Circle = 1/2 pie r²**

**Since Protractor Is Shape Of Semi Circle**

**Perimeter of Semi Circle(protractor) = r(pie + 2)**

36 = r(22/7 + 2)

36 = r[(22 + 14)/7]

36 = r[(36)/7]

**r =36 * 7 / 36**

**r = 7 cm**

**Area of Protractor = 1/2 Pie r**

**²**

= 1/2 * 22/7 * 7 * 7

= 11 * 7

**= 77cm**

**²**

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Mark This Brainliest if this Helped you

Thankx