A conical sand pile with a bottom area of 12.56 and a height of 0.9 meters. How thick can this pile of sand be laid into a sand pit with a length of 4.5 meters and a width of 2 meters?

A conical sand pile with a bottom area of 12.56 and a height of 0.9 meters. How thick can this pile of sand be laid into a sand pit with a length of 4.5 meters and a width of 2 meters?

(13 × 12.56 × 0.9) / (4.5 × 2) = 3.768 ／ 9, ≈ 0.42 (m). A: the sand can be paved about 0.42 m thick

A cone-shaped sand pile has a bottom area of 15 square meters and a height of 0.9 meters. How thick can this pile of sand be laid into a sand pit with a length of 4.5 meters and a width of 2 meters?
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The volume of sand pile v = 1 / 3 (SH) = 1 / 3 * 15 * 0.9 = 4.5, thickness d = V / A * b = 4.5 / (4.5 * 2) = 0.5

A cone-shaped sand pile with a bottom radius of 4m. (1) each cubic meter of sand weighs about 1.8 tons. How many tons does this pile of sand weigh?
A conical sand pile with a bottom radius of 4m
(1) Each cubic meter of sand weighs about 1.8 tons. How many tons does this pile of sand weigh?
(2) If the sand is poured into a rectangular empty sand with a length of 8m, a width of 5m and a depth of 2m, how high will the sand surface be?

(π = 3.14) (1) bottom area: 3.14 × 4 & # 178; = 50.24m & # 178;
Volume: 1 / 3 × 50.24 × 3 = 50.24m-179;
Weight: 50.24 × 1.8 = 90.432t
(2) The area of empty sand: 5 × 8 = 40m and 178;
Height: 50.24 △ 40 = 1.256m

There is a pile of conical sand with a radius of 3 meters at the bottom and a height of 2.1 meters. How many meters can this pile of sand be paved on an 8 meter wide road with a thickness of 1 decimeter?

1 decimeter = 0.1 M 13 × 3.14 × 32 × 2.1 △ 8 × 0.1 = 13 × 3.14 × 9 × 2.1 △ 0.8 = 19.782 △ 0.8 = 24.7275 ≈ 25 (m) a: this pile of sand can cover about 25 meters

A cone-shaped sand pile is 31.4m in circumference at the bottom and 3M in height. How many meters of sand can be laid on a 10m wide road with 2cm thickness?

2 cm = 0.02 M
Base radius of cone = 31.4 △ 2 △ 3.14 = 5m
The volume of cone = (1 / 3) × 3.14 × 5 & # 178; × 3 = 78.5 cubic meters
78.5 ÷ (10 × 0.02) = 392.5m
A: it is 392.5 meters long

The bottom area of a cone-shaped sand pile is 31.4m square. How many meters long can a 0.02M thick road be paved on a 10m wide road with this sand pile?

Volume 1 / 3x31.4x3 = 31.4m3
Length 31.4 ÷ (10x0.02) = 31.4 ÷ 0.2 = 157 M
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A cone-shaped sand pile has a perimeter of 18.84m on the low side, a height of 2.5m, and a sand weight of 1.8T per cubic meter. How many tons of sand does this pile weigh?

Radius = 18.84/3.14/2 = 3
Volume = 3 * 3 * 3.14 * 2.5/3 = 23.55m3
Weight = 23.55 * 1.8 = 42.39 tons

A cone-shaped sand pile has a perimeter of 18.84m and 5m at the bottom. If the mass of sand per cubic meter is 1.5T, how many tons of sand is there?

Bottom radius = 18.84 △ 3.14 △ 2 = 3 (m)
Bottom area = 3 & # 178; × 3.14 = 28.26 (M & # 178;)
Sand pile volume = 28.26 × 1.5 △ 3 = 14.13 (m # 179;)
Weight of this pile of sand: 14.13 × 1.5 = 21.195 (T)

The perimeter of the bottom of a cone-shaped beach is 12.56 meters, and the height is 6 meters. What is the volume of this sand pile?

The ground radius of a cone
12.56 ÷ (2 × 3.14) = 2 (m)
Volume of cone
1 / 3 × 3.14 × 2 × 2 × 6 = 25.12 (M3)
If the volume, length and width of the cuboid are known, the height of the cuboid can be calculated
25.12 ÷ (10 × 0.04) = 62.8 (m)

A conical sand pile with a volume of 7.536 square meters has a perimeter of 12.56 meters. How high is the sand pile?

A conical sand pile with a volume of 7.536 square meters has a perimeter of 12.56 meters. How high is the sand pile?
Radius 12.56 △ 3.14 △ 2 = 2m
Height 7.536 ／ 1 / 3 ／ (3.14 × 2 × 2)
=22.608÷12.56
=1.8m