Answer:
If I understand the definitions correctly,
"surface area" would be the total of all the areas of an object, while "lateral" surface area would exclude the base
so the surface area of a square pyramid
= area of the square base + 4(area of the triangle)
That's my "formua".
In both #1 and #2 you then give dimensions H, W, and L without defining them. If the base is square, how come we have different (W)idths and (L)engths
in #3 Diameter = 8, thus radius = 4
height = 7
Thus slant height of cone = √(4^2 + 7^2) = √65
surface area = πr(r+√(h^2+r^2)
= 4π(4 + √65) = appr 151.58
or surface area = πr^2 + πrs, where s is the slant height
= π(16) + π(4√65) = 151.58
I got the same answer using 2 established methods, none of the answers given match that.
Explanation:
i hope this helps if not im sorry