8cm. The radius is always half the diameter.
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To find the perimeter of a semicircle, you need to add the curved edge (half the circumference of a full circle) to the diameter of the semicircle. The formula for the circumference of a full circle is C = πd, where d is the diameter. Therefore, the circumference of the full circle is π(8) = 8π cm. The perimeter of the semicircle would be half of the circumference of the full circle plus the diameter, so it would be 4π + 8 cm, or approximately 20.28 cm.
The diameter of a circle is the length of a straight line from a point on the edge of the circle passing through the center of the circle and onto a point on the opposite edge of the circle. The radius of a circle is the length of a straight line from the center of a circle to a point on the edge of the edge of the circle. So the radius of a circle is half its diameter, in this case 8cm.
The area of a circle with a diameter of two cm is about 3.1416 cm.
It depends on the ratio of what of the circle? Its circumference, diameter, area?
Find the area of diameter 8cm given. Take π as 3⅐ or 3.14
Circumference of a circle = 3.14 x d 3.14 x 8 = 25.12 Therefore the circumference of a circle with the diameter of 8cm is 25.12cm.
C = ~25.133 cm
Area of a circle = pi*radius2
The curved surface area of a cylinder with a height of 8cm and diameter of 10cm is 251.33cm2
radius=4cm diameter=8cm *radius is half the diameter
Area of any circle = pi*radius squared
8cm. The radius is always half the diameter.
A = 5.093 cm2
the answer is 20.54
Using 3.14 as Pi the area of circle is: 200.96