Find the circumference and the area of a circle with radius 3 m. Use the value 3.14 for it, and do not round your answers. Be sure to include the correct units in your answers.
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Circumference:
Area:
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Explanation
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Step-by-step explanation:

We are asked to find the circumference and area of a circle with a radius of 3 meters.

The circumference is the perimeter of a circle. It is calculated using the following formula:

We know the radius of the circle is 3 meters, but we must find the radius. The radius is the line from the center to the circle's edge, while the diameter is the line through the center from edge to edge. Therefore, the diameter is twice the radius.

The diameter is 6 meters and we are using 3.14 for pi. Substitute these values into the circumference formula.

Multiply.

The area is the size of the circle's surface. It is calculated using the following formula.

The radius is 3 meters are we are using 3.14 for pi. Substitute these values into the area formula.

Solve the exponent.

The circumference is 18.84 meters and the area is 28.26 square meters.

54.864 meters

step-by-step explanation:

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.