What kind of figure can be made from two rectangles with a length of 8 cm and a width of 4 cm? What are the area and perimeter of the figure?

What kind of figure can be made from two rectangles with a length of 8 cm and a width of 4 cm? What are the area and perimeter of the figure?

1. It can be put together into a square. The side length of the square is 8 cm, its area is 8 * 8 = 64 square cm, and its perimeter is 8 * 4 = 32 cm
2. It can be put together into a rectangle. The length of the rectangle is 8 * 2 = 16 cm, the width is 4 cm, its area is 16 * 4 = 64 square cm, and its perimeter is (16 + 4) * 2 = 20 * 2 = 40 cm

Here is a figure made up of two rectangles 8 cm long and 5 cm wide. Please find out their perimeter and area

No matter how different it is, its area is 2 × 8 × 5 = 80 (cm-178;)
If 8 cm is joined to 8 cm, the circumference is (8 + 5) × 4-8 × 2 = 36 cm;
If 5cm is spliced with 5cm, the circumference is (8 + 5) × 4-5 × 2 = 42cm

A piece of rectangular colored paper with a length of 10 cm and a width of 8 cm can cut out at most several pieces of square paper with a side length of 2 cm. How to calculate?

This is not simple, 10 × 8 = 80, 2 × 2 = 480 ／ 4 = 20 is 20

The side length of a square paper is 8 cm. Now cut the largest garden from the square paper. What is the area of the remaining part

Square area: 8 × 8 = 64 square centimeters
Circle area: 3.14 × (8 △ 2) &# 178; = 50.24 square centimeter
Remaining: 64-50.24 = 13.76 square centimeter

How much area does it take to cut a 10 cm long and 8 cm wide rectangular paper into the largest circle

The largest circle has a diameter of 8 cm and a radius of 4 cm
Area s = 3.14 * 4 ^ 2 = 50.24 square centimeter
Cut out area = 10 * 8-50.24 = 29.76 square centimeter

Cut a piece of rectangular paper 10 cm long and 8 cm wide into the largest circle. What is the circumference of the circle

3.14 × 8 = 25.12 cm

After two squares of the same size are put together into a rectangle, the perimeter of the two squares is reduced by 8 cm

The perimeter is reduced by two sides, so the original side length of the square is 8 / 2 = 4cm

What is the area and perimeter of a square made of two rectangles 8 cm long and 4 cm wide?

Area is 8 * 8 = 64, perimeter is 8 * 4 = 32

Three squares of the same size are used to make a rectangle. The surface area is reduced by 36 square centimeters. What is the volume of the rectangle?

After forming a rectangle, 2 * 3 = 6 faces are reduced
Square each face = 36 / 6 = 6 (square centimeter)
6 = 3 * 3 = side length
Cuboid volume = 3 * 3 * 9 = 81 (CC)

Put four squares with the edge length of 2 cm into a rectangle. The surface area of the rectangle may be () square centimeter, and the volume may be () below
Put the four squares with the edge length of 2 cm into a rectangle. The surface area of the rectangle may be () square centimeter. At this time, the volume may be () cubic centimeter, and the surface area may be () square centimeter. Then the volume is () cubic centimeter
=ˇ―ˇ=

It should be cube and cuboid
The surface area of a cuboid may be (72) square centimeter, the volume may be (32) cubic centimeter, the surface area may be (64) square centimeter, then the volume is (32) cubic centimeter