A ≈ 28.27cm2
approximately 28.26 cm2
You said "diameter", so we'll assume that you're talking about a circle.Circumference of a circle (distance around, 'perimeter') = (pi) x diameter = 6 pi = 18.85 cm (rounded)Area of a circle = (pi) R2 = (pi) x (1/2 of the diameter)2 = 9 pi = 28.27 cm2 (rounded)
A cylinder with a height of 7cm and a diameter of 6cm has a surface area of 188.5cm2
C = ~37.7 cm A = ~113.1 cm2
A ≈ 28.27cm2
The area is 28.274 cm2
The circumference of a circle with a diameter of 6cm is about 18.85cm
Area of a circle = (pi) R2 = (pi) x (1/2 of the diameter)2 = 9 pi = 28.27 cm2 (rounded)
12 cm.
6cm
The radius of the circle is half the diameter of the circle. 30mm radius would mean 60mm diameter or 6cm.
12 cm
The diameter of circle A is 12cm so its radius must be 6cm.
6/2 = a radius of 3 cm
The circumference of a circle = 2*pi*radius or diameter*pi
Since the diameter is always twice the length of the radius, the length of the radius is 6cm.