What is the surface area of the cone? if the diameter is 25 and the hight is 22cm?

...... emergency meeting panda is sus......

Surface area = πr(r + √(h^2 + r^2))

Surface area = 3.14 * (25/2) * (25/2 + √(22^2 + (25/2)^2))

Surface area = 785.5 cm^2