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3 years ago

Help me Ill give brainlist

Mathematics

1 answer:

IrinaVladis [17]3 years ago

7 0

Answer:

18π + 90

Step-by-step explanation:

The perimeter is the sum of quarter of the circumference and 2r , that is

P = 2πr + (45 + 45)

= 2 × π × 36 × $\frac{1}{4}$ + 90

= 2 × π × 9 + 90

= 18π + 90

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