25 points no I need help with math

1. 23.55 in

2. 102.36 mm

Step-by-step explanation:

First, the circumference of a circle is written as: , where either equivalence works and d = diameter and r = radius.

1. We know that d = 7.5, so we just plug this into the equation:

Thus, the circumference is 23.55 inches.

2. We know here that r = 16.3, so we can plug this into the other equivalence:

≈

Thus, the circumference is 102.36 millimeters.

Hope this helps!

1. 23.55 inches

2. 102.36 millimeters

Step-by-step explanation:

1. Circumference = pi × d

3.14 × 7.5

= 23.55 in

2. Circumference = 2pi × r

2 × 3.15 × 16.3 = 102.364 mm

i got 10.28 but that rounds up to 10.3

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step-by-step explanation:

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