Question

Calculate the volume of a cone of height 8cm and base diameter 12cm

Answer 1

Answer:

Step-by-step explanation

daimeter=12cm

radius=12÷2=6cm

slant height =?

l^2=h^2+r^2

l^2=8^2+6^2

l^2=64+36=100

l^2=100

l=\sqrt[100]

l=10

slant height=10cm

total surface area of cone=\pi*r(l+r)

3.14*6(10+6)

3.14*6*16

310.44cm^2

(3)volume of cone =1by3*\pi*r^2*h

1by3*3.14*6*6*8

=904.32÷3

=301.44cm^3

I hope it helpful

Answer 2

Answer

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