Counting every exposed frustum face

A solid right circular conical frustum has bottom radius 6 cm, top radius 3 cm and perpendicular height 4 cm. Both circular faces are exposed.

1. Find the slant height of the frustum.[2]
2. Find its total surface area, correct to 3 significant figures. You may use curved area \(=\pi(R+r)s\), where \(R\) and \(r\) are the radii and \(s\) is the slant height.[3]