Answer: OPTION C
Step-by-step explanation:
The formula for calculate the surface area of a cone is shown below:
[tex]SA=rl\pi+r^{2}\pi[/tex]
Where r is the radius, l is the slant height and SA is the surface area of the cone.
Substitute the values into the formula shown above. Therfore, the surface area of the cone is:
[tex]SA=(7cm)(10cm)\pi+(7cm)^{2}\pi=119\pi[/tex]cm²
