Question

Найдите объем и площадь всей поверхности прямоугольного параллелепипеда ,длина которого 7 ми , ширина 3 см , высота 9 см.

Answer 1

Надо7см*3см*9см=189см.куб

Answer 2

ШИРИНУ ПОМНОЖИТИ НА ВИСОТУ І ПОМНОЖИТИ НА ДОВЖИНУ

Answer 3

Calculating the Volume and Surface Area of a Rectangular Prism

To find the volume and surface area of a rectangular prism with a length of 7 cm, a width of 3 cm, and a height of 9 cm, we can use the following formulas:

1. Volume (V): The volume of a rectangular prism is given by the formula V = length × width × height. 2. Surface Area (SA): The surface area of a rectangular prism can be calculated using the formula SA = 2lw + 2lh + 2wh, where l, w, and h are the length, width, and height of the prism, respectively.

Calculating the Volume

Using the given dimensions, we can calculate the volume of the rectangular prism: - V = length × width × height - V = 7 cm × 3 cm × 9 cm - V = 189 cubic centimeters

The volume of the rectangular prism is 189 cubic centimeters.

Calculating the Surface Area

Now, let's calculate the surface area of the rectangular prism: - SA = 2lw + 2lh + 2wh - SA = 2(7 cm × 3 cm) + 2(7 cm × 9 cm) + 2(3 cm × 9 cm) - SA = 42 square centimeters + 126 square centimeters + 54 square centimeters - SA = 222 square centimeters

The surface area of the rectangular prism is 222 square centimeters.

So, the volume of the rectangular prism is 189 cubic centimeters, and the surface area is 222 square centimeters.