The surface area formula for a cone, given its diameter (or radius) and height, is π x (diameter / 2) 2 + π x (diameter / 2) x √ (diameter / 2) 2 + (height 2), where (diameter / 2) is the radius of the base (d = 2 x r), so another way to write it is π x radius 2 + π x radius x √ (radius 2 + (height 2)
![d=60 \ [cm] \\ \\ C=60\pi \approx 60 \times 3.14=188.4 \approx 188 \ [cm]](https://tex.z-dn.net/?f=d%3D60%20%5C%20%5Bcm%5D%20%5C%5C%20%5C%5C%0AC%3D60%5Cpi%20%5Capprox%2060%20%5Ctimes%203.14%3D188.4%20%5Capprox%20188%20%5C%20%5Bcm%5D)