We know that Part 1) [surface area of a cone without base]=<span>π*r*l r=3 in l=slant height ----> 6 in </span>[surface area of a cone without base]=π*3*6------> 56.52 in²
[surface area of a cylinder]=π*r²+2*π*r*h------> only one base r=3 in h=5 in [surface area of a cylinder]=π*r²+2*π*r*h [surface area of a cylinder]=π*3²+2*π*3*5-----> 122.46 in²
[surface area of the composite figure]=56.52+122.46-----> 178.98 in²
the answer Part A) is 178.98 in²
Part B) [surface area of the composite figure] =12*16+2*12*7+2*16*7+5*12+5*16+13*16----> 932 ft²
