Question

Аквариум имеет форму прямоугольного параллелепипеда . его боковые стенки стеклянные . определите площадь поверхности стекла , если длинна 50 см , ширина 25см ,высота 30см

Answer 1

Sпов.стекла=Sбок+Sосн
Sбок=Pосн*H,   Sбок=2*(a+b)*H
Sосн=a*b
Sпов.стекла=2*(a+b)*H+a*b
S=2*(50+25)*30+50*25=5750
ответ:  Sпов. стекла=5750 см²

Answer 2

S=2(50+25)*30=150*30=4500см²

Answer 3

Calculation of the Surface Area of the Glass Aquarium

To calculate the surface area of the glass in a rectangular parallelepiped aquarium, we need to find the areas of the six faces and then sum them up.

Given dimensions: - Length (l) = 50 cm - Width (w) = 25 cm - Height (h) = 30 cm

The six faces of the aquarium are: 1. Top face: l * w 2. Bottom face: l * w 3. Front face: l * h 4. Back face: l * h 5. Left side face: w * h 6. Right side face: w * h

Let's calculate the surface area of the glass using these dimensions:

1. Top face: l * w = 50 cm * 25 cm = 1250 cm² 2. Bottom face: l * w = 50 cm * 25 cm = 1250 cm² 3. Front face: l * h = 50 cm * 30 cm = 1500 cm² 4. Back face: l * h = 50 cm * 30 cm = 1500 cm² 5. Left side face: w * h = 25 cm * 30 cm = 750 cm² 6. Right side face: w * h = 25 cm * 30 cm = 750 cm²

Now, let's sum up the areas of all the faces to find the total surface area of the glass:

Total surface area = Top face + Bottom face + Front face + Back face + Left side face + Right side face = 1250 cm² + 1250 cm² + 1500 cm² + 1500 cm² + 750 cm² + 750 cm² = 7000 cm²

Therefore, the surface area of the glass in the rectangular parallelepiped aquarium is 7000 cm².