A conical wheat pile. The perimeter of the bottom is 18 meters, 2 meters. Each cubic meter of wheat weighs about 700 kg How many kilos does this pile of wheat weigh? (π takes approximate value 3, and the final result is 100 kilos.)

A conical wheat pile. The perimeter of the bottom is 18 meters, 2 meters. Each cubic meter of wheat weighs about 700 kg How many kilos does this pile of wheat weigh? (π takes approximate value 3, and the final result is 100 kilos.)

Radius = 18 ﹣ 3 ﹣ 2 = 3M
Volume = 3 × 3 × 3 × 1.2 △ 3 = 10.8 M3
Weight = 10.8 × 700 = 7560 ≈ 7600 kg

A cone-shaped pile of wheat has a circumference of 12.56 meters at the bottom and a height of 1.5 meters. It weighs about 750 kg per cubic meter of wheat. How many tons does this pile of wheat weigh?

13 × (12.56 △ 3.14 △ 2) 2 × 1.5 × 750 = 13 × 3.14 × 22 × 1.5 × 750 = 13 × 3.14 × 4 × 1.5 × 750 = 3.14 × 4 × 0.5 × 750 = 3.14 × 2 × 750 = 6.28 × 750 = 4710 (kg) 4710 kg = 4.71 T. A: this pile of wheat weighs 4.71 t

Uncle Wang's family has a cone-shaped wheat pile. The perimeter of the bottom of the pile is 18.84 meters and the height is 2 meters. If you put the wheat into a pile with a diameter of 4 meters on the bottom
How high can be stored in the grain store?

Cone radius = 18.84 ／ 2 ／ 3.14 = 3M
Height = 2m
Cylinder radius = 2m
Height that can be installed
=Volume of cone △ area of cylinder bottom
=(1 / 3 × 3.14 × 3 & # 178; × 2) / (3.14 × 2 & # 178;)
=1.5m