Answer:
First know this,
The volume V of a cylindrical barrel is given by the formula. V = πr2h, where r is the barrel's radius and h is the barrel's height.

Rewrite the equation as πr2h=V π r 2 h = V . Divide each term by πr2 π r 2 and simplify. Divide each term in πr2h=V π r 2 h = V by πr2 π r 2 .
Step-by-step explanation:

Answer:
0.8 : 1.2
Step-by-step explanation:
2/5 × 2= 0.8 Tonnes
3/5 ×2 = 1.2 tonnes