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fenix001 [56]
3 years ago
8

I need this done please help me

Mathematics
1 answer:
levacccp [35]3 years ago
3 0

Answer:

see explanation

Step-by-step explanation:

A

The area (A) of a circle is calculated as

A = πr² ( r is the radius )

Here diameter = 12 , then radius = 12 ÷ 2 = 6 , then

A = π × 6² = 3.14 × 36 = 113.04 m²

B

The circumference (C) of a circle is calculated as

C = 2πr ( r is the radius )

Here C = 28.26 , then

2πr = 28.26 ( divide both sides by 2π )

r = \frac{28.26}{2(3.14)} = \frac{28.26}{6.28} = 4.5 in

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