Question

The diameter of a circle is 12 cm.

Calculate the area and the circumference of the circle.
Give your answer to 1 decimal place and state the appropriate units.

Answer 1

The area of the circle is approximately 113.1 square cm and the circumference is approximately 37.7 cm.

Step-by-step explanation:

Calculating the Area and Circumference of a Circle

To calculate the area of a circle, we use the formula A = πr², where r is the radius of the circle. Since the diameter is given, we first need to find the radius by dividing the diameter by 2. In this case, the radius is 6 cm. Plugging this value into the formula, we find that the area of the circle is approximately 113.1 square cm.

To calculate the circumference of a circle, we use the formula C = 2πr, where r is the radius of the circle. Plugging in the value of the radius (6 cm) into the formula, we find that the circumference of the circle is approximately 37.7 cm.

Note: π (pi) is a mathematical constant with an approximate value of 3.14159.

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