Claire says that in order to calculate the surface area of the cone, she needs to use 8 in. Miles says that in order to calculate the surface area of the cone, he needs to use 9 in. Who is correct and why? radius:3.5 height:8 slant height:9
1.Claire is correct because 8 in. is the slant height of the cone.
2.Miles is correct because 9 in. is the height of the cone.
3.Miles is correct because 9 in. is the slant height of the cone.
4.Claire is correct because 8 in. is the height of the cone.