Answer-

Given-

• Diameter of wooden log = 84cm
• Length of wooden log = 3.6m

To find-

• Volume of log in m³ = ?

Solution-

A wooden log is in form of cylinder .

To finding the volume of wooden log

Using formula ,

[tex]\boxed{ \leadsto\sf \: \: Volume \: of \: cylinder = \: \pi {r}^{2} h}[/tex]

Where ,

Radius of wooden log = D/2 = 84/2= 42cm

In metres, Radius of wooden log = 0.42m

Height of wooden log =3.6m

Using [tex]\pi[/tex] = 3.14

Now,

Volume of Wooden log

= [tex]\sf\pi {r}^{2} h[/tex]

Volume of Wooden log

= 3.14×0.42×0.42×3.6

Volume of Wooden log

= 1.99m³ = 2m³ (approx)

Hence , the Volume of wooden log is 2m³.

_____________________________________

Given :-

Diameter of wooden log is equals to 84 cm length of wooden log is equals to 3.6 m

To Find :

volume of log in metre cube?

Solution :-

It is given that diameter of wooden log is equals to 84 cm.

Radius = 84/2

Radius = 42cm

Therefore, radius of wooden log is equals to 42 cm.

Since the wooden log is in the shape of cylinder we can use formula to find volume of a cylinder which is πr²h.

[tex] \sf{ } \implies \: \dfrac{22}{7} \times 42 \times 42 \times 3.6 \\ \\ \sf{ } \implies \:22 \times 6 \times 42 \times 3.6[/tex]

[tex]\sf{ } \implies \:19958.4[/tex]

Here, volume is equals to 2m³ approx.