56.549 cm
Using 3.14 as Pi the area of circle is: 254.34
The surface area of a cylinder with a radius of 6cm and a height of 9cm is 565.5 units2
Doubling the radius doubles the circumference.
Circumference of the circle: 2*pi*9 = 18*pi cm
A circle with a radius of 4.5Cm has an area of 63.62Cm2
56.549 cm
Using 3.14 as Pi the area of circle is: 254.34
56.549 cm
The surface area of a cylinder with a radius of 6cm and a height of 9cm is 565.5 units2
Doubling the radius doubles the circumference.
r= 9 so diameter is 2x the radius =18 cm
The equation for circumference is C = 2*pi*r, where r is the radius of the circle and pi is a constant = 3.14159... Assuming that you mean a 9cm radius, the circumference is therefore: C = 2*pi*r = 2*pi*9cm = 18cm*pi = ~56.549cm
The area of a circle is figured out using the formula Now, the circle we are given has a radius of 9cm. So, the area of the circle would be: Area = 3.14 x (9)2 = 3.14 x 81 = 254.34 cm2 The area of the circle in question is 254.34 cm2
The diameter of a circle is double the radius so it has to be 9cm
Circumference of the circle: 2*pi*9 = 18*pi cm
The surface area is 226.2cm2