Question

Аквариум имеет форму прямоугольного параллелепипида .его боковые стенки стеклянные .определите площадь поверхности стекла .если длина аквариума 50 см .ширина 25 см .а высота 30 см.

Answer 1

Sниз=50×25=1250см
Sбоковых=25×30×2=1500см
Sбоковых=50×30×2=3000см
Sобщ=1250+1500+3000=5750см

Answer 2

Calculation of the Surface Area of the Glass in the Aquarium

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

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

Calculation:

1. The area of the front and back faces (l x h): - Front face: l x h = 50 cm x 30 cm = 1500 cm² - Back face: l x h = 50 cm x 30 cm = 1500 cm²

2. The area of the top and bottom faces (w x l): - Top face: w x l = 25 cm x 50 cm = 1250 cm² - Bottom face: w x l = 25 cm x 50 cm = 1250 cm²

3. The area of the two side faces (w x h): - Left side face: w x h = 25 cm x 30 cm = 750 cm² - Right side face: w x h = 25 cm x 30 cm = 750 cm²

4. Summing up the areas of all six faces: - Front face area + Back face area + Top face area + Bottom face area + Left side face area + Right side face area - 1500 cm² + 1500 cm² + 1250 cm² + 1250 cm² + 750 cm² + 750 cm² = 7000 cm²

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