MEASUREMENTS | PERIMETER, SURFACE AREA & VOLUME | GRADE 10 & 11

Marathon of past exam paper questions on measurements for both grade 10s but also compatible for grade 11 to solidify the basics

[a.dria_na]

Hi sir at 16:46 how come at 7.1 we used the slant height while at 7.3 we used the perpendicular height while calculating the volume of the pyramid? And is there a difference between calculating the surface area and total surface area?