Question

Find the slant height and CSA of the frustum ofa cone of height 6cm if the radii of its bases are 14cm and 6cm

Answer 1

slant height =under root height^2+(R1^2-R2^2) =under root 6^2+14^2-6^2 =under root 36+160 =14cm slant height is 14 cm
CSA= 22÷7×14 (14+6)
CSA=622cm^2