You do do pi r squared times 2 + pi times height and diameter
How Do You Work Out The Surface Area Of A Circle?
Sa=2 pie r
pie=3.14
r=the number of the radius
pie=3.14
r=the number of the radius
The area of a circle is simply PI x R squared,
Where PI is the value 22/7 and R is the radius of the circle.
Hence the surface area of a circle measuring 30 cm in diameter would be 22/7 x 15 x 15 = 707.14 cm2
Where PI is the value 22/7 and R is the radius of the circle.
Hence the surface area of a circle measuring 30 cm in diameter would be 22/7 x 15 x 15 = 707.14 cm2
A=2*pi*r
pi=3.14
So,2*3.14*r
r=7
=43.96=44.00
pi=3.14
So,2*3.14*r
r=7
=43.96=44.00
Multiply the radius by itself and then multiply that result by pi. That gives the area of the circle.