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?

Question

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?

(1 point)
Responses

Miles is correct because 9 in. is the height of the cone.
Miles is correct because 9 in. is the height of the cone.

Claire is correct because 8 in. is the height of the cone.
Claire is correct because 8 in. is the height of the cone.

Claire is correct because 8 in. is the slant height of the cone.
Claire is correct because 8 in. is the slant height of the cone.

Miles is correct because 9 in. is the slant height of the cone.
Miles is correct because 9 in. is the slant height of the cone.

Answer 1

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?

To calculate the surface area of a cone, you need the height and the slant height. Therefore, neither Claire nor Miles is completely correct.