For #3 I got:

a) 6000

b) 6.15

c) 0.04

For #8 I got:

$21.42

For #12 I got

1110 kilometres on a full tank.

**Cylinder & Volume Post.**

Height = 10cm

Diameter = 20.3cm

r= d/2 r = 20.3 / 2

r = 10.5cm

v = π x r x r x h

v = 3.14 x 10.15 x 10.15

v = 323.49cm2

v = 323.49 x 10

v = 3234.9cm3

Diameter = 20.3cm

r= d/2 r = 20.3 / 2

r = 10.5cm

v = π x r x r x h

v = 3.14 x 10.15 x 10.15

v = 323.49cm2

v = 323.49 x 10

v = 3234.9cm3

**Height**

*= 10m*

**Diameter**= 0.8 (inside) and 1 (outside)

**Inside**-

R = d/2

R = 0.8/2

R = 0.4

V = π x r x r x h

V = 3.14 x 0.4 x 0.4 x h

V = 0.5 x 10

V = 5m

**Outside**-

R = d/2

R = 1/2

R = 0.5

V = π x r x r x h

V = 3.14 x 0.5 x 0.5 x h

V = 0.78 x 10

V = 7.8m

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