The base 2

The base diameter of a right cone is 16cm, and its slant height is 12cm.
A. ) Find the perpendicular height of the cone to 1 decimal place.
B. ) Find the volume of the cone, and convert it to 3 significant figures. Take pi =3.14

Correct answer:

h =  8.9 cm
V =  599.45 cm3

Step-by-step explanation:

D=16 cm s=12 cm  r=D/2=16/2=8 cm  s2 = r2 + h2  h=s2r2=12282=4 5=8.9 cm
V=31 π r2 h=31 3.1416 82 8.9443=599.45 cm3



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Showing 1 comment:
Student
In B you used pi to more significant digits than just three. If I used 3.14 I get a different answer. Also with the other figueres used. The question needs to be more specific about what figures to use in the calculation? Thanks for a good practice though!





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