A cone-shaped sand pile has a bottom area of 25 square meters and a height of 1.8 meters. How many meters can a 5 cm thick road surface be paved with this pile of sand on an 8 meter wide road? (solved by equation)

Solution: suppose x meter can be paved. 5cm = 0.05m, 8 × 0.05 × x = 13 × 25 × 1.8 & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; 0.4x = 15, & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; X = 37.5

A conical sand pile has a bottom area of 3.14 square meters and a height of 1.2 meters. If it is laid on a highway with a width of 5 meters, how long can it be laid if it is 2 cm thick

There are 2.3 × 1.256 cubic meters of sand
1.256 ﹣ 5 ﹣ 2 ﹣ 100 = 12.56m

A cone-shaped sand pile has a bottom area of 12.6 square meters and a height of 1.2 meters. How many meters can a 2 cm thick road be paved on a 12 meter wide road with this pile of sand?

(12.6 *1.2 /3 ) /(12 * 2/100)=21m

1. A cone-shaped sand pile, with a bottom area of 28.26 square meters and 5 meters. How many meters can a 2 cm thick road be paved on a 10 meter wide road with this pile of sand

The volume of the cone is: 1 / 3 * 28.26 * 2.5 = 23.55 cubic meters
Paveable: 23.55 / (10 * 0.02) = 117.75 M

A cone-shaped sand pile has a bottom area of 25.12 square meters and a height of 1.8 meters. How many meters can a 3 cm thick road surface be paved on a 10 meter wide road with this pile of sand?

3cm = 0.03m, 13 × 25.12 × 1.8 ^ (10 × 0.03), = 25.12 × 0.6 ^ 0.3, = 15.072 ^ 0.3, = 50.24m; a: using this pile of sand to pave 3cm thick road surface on 10m wide road can pave 50.24m

A cone-shaped sand pile has a bottom area of 37.68 square meters and a height of 1.2 meters. If this pile of sand is used to pave a 2 cm thick road surface on a 10 meter wide road, how many meters can it pave?

3cm = 0.03m, 13 × 37.68 × 1.2 ^ (10 × 0.02); = 37.68 × 0.4 ^ 0.2, = 75.36m; a: can pave 75.36m

The circumference of the bottom surface of a cone is 18.84 meters. How many square meters is its bottom area?

Radius = 18.84 △ 3.14 △ 2 = 3 (m) bottom area = 3.14 × 3 × 3 = 28.26 (M2)

8mm tempered glass weight / m2
How much is 8mm tempered glass per square meter,

The weight of ordinary float glass is calculated as follows:
1 mm / 1 square, about 5 jin (2.5 kg)
8 * 5 = 40 kg (20 kg)
Because the thickness of float glass is relatively uniform in production, the actual thickness of 8% is about 7.92mm. If the thickness of embossed glass or other glass is not standard, it can not be calculated by this method

How many mm thick is the hollow layer of hollow tempered glass?

Because there is desiccant that can absorb water molecules inside the insulating glass, the gas is dry, and when the temperature decreases, there will be no condensation inside the insulating glass. At the same time, the dew point on the outer surface of the insulating glass will also increase. For example, when the outdoor wind speed is 5m / s, the indoor temperature is 20 ℃, and the relative humidity is 60%, the 5mm glass begins to dew when the outdoor temperature is 8 ℃, Under the same conditions, the 16mm (5 + 6 + 5) insulating glass only dews when the outdoor temperature is - 2 ℃, and the 27mm (5 + 6 + 5 + 6 + 5) three-layer insulating glass only dews when the outdoor temperature is - 11 ℃, In the same building structure, when the outdoor temperature is - 8 ℃ and the indoor temperature is 20 ℃, the cold radiation area of 3mm ordinary single-layer glass accounts for 67.4% of the indoor space, while that of double-layer insulating glass (3 + 6 + 3) accounts for 13.4%, The wind pressure strength of insulating glass is 1.5 times higher than that of ordinary single glass

How much is two square eight millimeter tempered glass?

The density of glass is 2.52.5 * 8 * 2 = = 40 kg

A cone-shaped sand pile has a bottom area of 25 square meters and a height of 1.8 meters. How many meters can a 5 cm thick road surface be paved with this pile of sand on an 8 meter wide road? (solved by equation)