Answers:
1) πrl Lateral area
2) You have calculated the volume of a rectangular prism using the formula V 5 lwh, where V is the volume, l is the length, w is the width, and h is the height.
3)P is the perimeter of the base, and s is the slant height.
4) I dont know
5) The surface area of a pyramid is , where B is the base area, P is the base perimeter, and the slant height. , where h is the pyramid altitude and r is the inradius of the base.
6) (a+b)² =a² + 2ab + b² (a−b)² = a² − 2ab + b² (a+b)(a–b)=a² – b²
7) I dont know.