For a triangle and a parallelogram of equal height, if the bottom of the parallelogram is three times that of the triangle, then the area of the parallelogram is [] Set the bottom as 3 and the height as 2 3×2÷2=3 9×2÷2=9

For a triangle and a parallelogram of equal height, if the bottom of the parallelogram is three times that of the triangle, then the area of the parallelogram is [] Set the bottom as 3 and the height as 2 3×2÷2=3 9×2÷2=9

For a triangle and a parallelogram of equal height, if the bottom of the parallelogram is three times that of the triangle, the area of the parallelogram is [6 times] that of the triangle

For a triangle and a parallelogram of equal height, if the bottom of the parallelogram is three times that of the triangle, how many times is the area of the parallelogram?

If the height of the triangle is expressed by H:
Then the area of triangle is: bottom × h × & # 189;
The mask of parallelogram is: bottom × 3H
S parallelogram ／ s triangle = 3 ／ & # 189; = 3 × 2 = 6

A triangle and a parallelogram have the same base and three times the height of the parallelogram if the parallelogram has the same area
It's six centimeters. What's the area of the triangle

The area of a triangle with equal base and equal height is half that of a parallelogram
The area of triangle is 6 △ 2 × 3 = 9 square centimeter

The perimeter of a rectangle is 240 decimeters, the ratio of length to width is 7:5, and how many square meters is its area
Be careful not to bring others over. What do 7x and 5x mean

According to the circumference of the rectangle = (length + width) * 2 = 240 decimeters, we get: length + width = 240 / 2 = 120 decimeters, the ratio of length and width is 7:5, then length can be regarded as 7 parts, width can be regarded as 5 parts, length and width are 7 + 5 = 12 parts, length accounts for 7 / 12 of the sum of length and width, so we can get length = 120 * 7 / 12 = 70 (decimeters) = 7 meters, width = 120-70 = 50 (minutes)

Increase the length and width of a rectangular lawn by 3 meters, and increase the area of the lawn by 159 square meters. What is the perimeter of the original rectangular lawn?

Let the length and width of the original rectangle be x and Y respectively
（x+3）（y+3）=xy+159
xy+3（x+y）+9=xy+159
3（x+y）=150
x+y=50
So: 2 (x + y) = 100
The perimeter of the original rectangular lawn is 100 meters

The perimeter of a rectangular grassland is 24m. If its length and width are increased by 3M, how much M2 will the lawn area increase?

24/2=12m
(12+3*2)*2=36m
36-24=12m

The perimeter of a rectangular lawn is 36 meters. If its length and width are increased by 3 meters, how many square meters will the area of the original lawn increase?

36 / 2 = 18m
3 * 3 + 3 * 18 = 63 square meters

The perimeter of a rectangular lawn is 36 meters. If its length and width increase by 3 meters, the area of the original lawn will increase

36 / 2 = 18m
The original length is 10 meters and the width is 8 meters
10 * 8 = 80m
（10+3）*（8+3）
=13*11
=143 M
143-83 = 60m
A: 60 meters more

The circumference of a rectangle is C meters, the length is a meters, and the width is () meters
A. c-2aB. c÷2-aC. c-2a÷2

The width is: (C-2A) △ 2 (m) or C △ 2-A (m). Answer: the width is (C-2A) △ 2 m or C △ 2-A M

The length of a rectangle is a meter, which is 4 meters more than the width. What is the perimeter and area of a rectangle?

Perimeter = 2 (a + 4), area s = 4A, the best homework to do well