Find the volume of the barrel if the diameter is 1m 50 cm and the height is 1m 20cm?

The barrel is shaped like a cylinder. The volume of the cylinder is found using the following formula:

V = Sbnh, where Sbn is the base area, h is the height.

The base of the cylinder is a circle. Its area can be found using the following formula:

Sсн = πd² / 4, where d is the diameter of the circle.

Find the base area of the barrel:

Sop = π * (1.5) ² / 4 = 2.25π / 4 = 0.5625π m².

Now you can find the volume of the barrel:

V = 0.5625π * 1.2 = 0.675π ≈ 2.12 m³.

Answer: The volume of the barrel is approximately 2.12 cubic meters.