Mariah needs the circumference of a circular pit in her backyard to be 18.9 meters. She uses a rope tied to a wooden stake to trace out a circle in her backyard.

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Step-by-step explanation:

Your question isn't complete but I'm assuming that you want to calculate the radius.

Circumference of a circle = 2πr

where Circumference = 18.9 meters

Radius = Unknown

π = 3.14

We then put the values into the formula which will be:

C = 2πr

18.9 = 2 × 3.14 × r

18.9 = 6.28r

r = 18.9 / 6.28

r = 3

The radius = 3 meters

Assuming you probably want to get the diameter, we multiply the radius by 2. This will be:

= 2 × 3

= 6 meters

the photograph is photographer and- in the process- ourselves.

step-by-step explanation: