Use four rectangle with circumference of 28cm to form a big rectangle, and find the perimeter of the big rectangle

Use four rectangle with circumference of 28cm to form a big rectangle, and find the perimeter of the big rectangle

The perimeter of the four rectangles is 28 * 4 = 112 cm;
Perimeter of large rectangle = sum of perimeter of 4 rectangles = 112 cm

The circumference of a rectangle is 28cm, and the length is 11cm. To find the width of a rectangle, we need an equation! Hurry!

Let the width of a rectangle be X
2x+2*11=28
2x=28-22
x=6/2
x=3

As shown in the figure, it is a big rectangle made up of five identical small rectangles. The perimeter of the big rectangle is 44 cm. Calculate the area of the big rectangle

If the length of two small rectangles is equal to the width of three small rectangles, then the length of the small rectangle: width = 3:2, and the width is 23 of the length; if the length of the small rectangle is a centimeter, then the width of the small rectangle is 23a centimeter, and the length of the large rectangle is 2A centimeter; the width is a + 23a = 53a (centimeter); (2a + 53a) × 2 = 44, & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; 2A + 53a = 22, & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp;   113a=22，             A = 6; the length of a small rectangle is 6 cm, and the width is 6 × 23 = 4 (CM); the length of a large rectangle is twice the length of a small rectangle, and the width is the length and width of a small rectangle, so: the length of a large rectangle is 6 × 2 = 12 (CM), the width of a large rectangle is 4 + 6 = 10 (CM), and the area of a large rectangle is 12 × 10 = 120 (square cm). A: the area of this large rectangle is 120 square centimeters Rice

The length and width of a rectangle are increased by 5 cm and the area is increased by 165 square cm respectively?

(L + 5) (W + 5) - L * w = 165
5 (L + W) = 165-25 = 140
Length + width = 140 / 5 = 28
The circumference of the original rectangle = 2 (length + width) = 2 * 28 = 56 cm

How many square centimeters is the surface area of a cuboid? How many spelling methods are there?

Two spelling methods: 1 * 4 2 * 2
1. 1 * 4 * 4 + 1 * 1 * 2 = 18 square centimeters
2. 2 * 2 * 2 + 1 * 2 * 4 = 16 square centimeters

There are several ways to make a cuboid with six cuboids whose edges are 1cm long. What are the surface areas of the cuboid

Two species: 1 * 1 * 2 + 1 * 6 * 4 = 26cm & # - 178; 1 * 2 * 2 + 1 * 3 * 4 = 16cm & # - 178; 1 * 2 * 2 + 1 * 3 * 4 = 16cm & # - 178;

There are several ways to make a large cube with 12 small cubes with the same edge length of 1cm. What are the maximum and minimum surface areas?

Cuboid
It's a cuboid. It's a math: there are three ways to make a cuboid out of 12 small cubes with the same edge length of 1cm. The largest surface area is (36) square centimeters, and the smallest is (26) square centimeters
Spelling: 1 row has the largest area, 2 rows have 6 fast, 3 rows have 4 fast, and the surface area is the smallest

There are several ways to make a larger cuboid with three cuboids of 3cm in length, 2cm in width and 1cm in height. How do you spell the surface area of the cuboid

Three species: 1. Length 3. Width 2. Height 3
2. Length 6, width 3, height 1
3. Length 9, width 2, height 1
The third has a maximum surface area of 58 square centimeters and the first has a minimum surface area of 42 square centimeters

There are several different ways to make a cuboid out of twelve identical cuboids. What are their surface area and volume respectively?

There are four
1 * 12 surface area 50 Volume 12
1 * 2 * 6 surface area 40 Volume 12
1 * 3 * 4 surface area 38 Volume 12
2 * 2 * 3 surface area 32 Volume 12

There are several different ways to put together a large cuboid with a small cube with 8 fast edges and a length of 2cm. What are their volume and surface area
List four figures
Length:
Width:
High:
Volume:
Surface area:

1) Length: 16; width: 2; height: 2; volume: 64; surface area: 136;
2) Length: 8; width: 4; height: 2; volume: 64; surface area: 112;
3) Length: 4; width: 4; height: 4; volume: 64; surface area: 96;
There are only three kinds of spelling, but there are 10 different kinds of figures:
The first spelling can have three different figures;
The second spelling can have six different figures;
The third spelling has only one different figure