Calculate 82690

A cone of rotation with a height of 18 cm and side length s = 45 cm is given. Calculate the surface area and volume.

Correct answer:

S =  11174.47 cm2
V =  32063.09 cm3

Step-by-step explanation:

v=18 cm s=45 cm  s2 = r2+v2 r=s2v2=452182=9 21 cm41.2432 cm  S1=π r2=3.1416 41.243225343.8491 cm2 S2=π r s=3.1416 41.2432 455830.6174 cm2 S=S1+S2=5343.8491+5830.6174=11174.47 cm2
V=31 S1 v=31 5343.8491 18=32063.09 cm3



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