Answer:
below
Explanation:
Part A)
The radius of a circle is half of its diameter.
Therefore, the radius of the circle is:
radius = diameter/2 = 8cm/2 = 4cm
So, the radius of the circle is 4cm.
You can also find radius by just dividing the diameter in half, or by 2.
Part B)
The area of a circle can be found using the formula:
Area = πr^2
where π is the mathematical constant pi (approximated as 3.14), and r is the radius of the circle.
Substituting the values given in the question, we get:
Area = πr^2
= 3.14 × (4cm)^2
= 3.14 × 16cm^2
Therefore, the area of the circle is:Area = 50.24cm^2 (rounded to two decimal places)
So, the area of the circle with a diameter of 8cm is 50.24cm^2.