Decompose the rectangle along the diagonal and recompose the two pieces to make a different shape, then five different ways are shown.
<h3>Further explanation
</h3>
Area is the number of squares inside a two-dimensional shape.
Here are two important principles for finding area:
- If two figures can be placed one on top of the other, then they have the same area so that they match up exactly.
- We can decompose a figure (break a figure into pieces) and rearrange the pieces (move the pieces around) to find its area.
A rectangle has two diagonals. Each one is a line segment drawn between the opposite vertices (corners) of the rectangle. For rectangle, shapes can be decomposed and rearranged back to rectangles to find the area. When decomposing and rearranging shapes the area of the polygon does not change.
The rectangle is shown in the picture below. After decompose the rectangle along the diagonal, we can varied the pieces to make various different shape. Picture below also shown the five different ways pieces from the rectangle.
<h3>Learn more</h3>
- Learn more about rectangle brainly.com/question/2810576
- Learn more about Decomposing and Rearranging brainly.com/question/3026941
- Learn more about Area and Surface Area brainly.com/question/9265968
<h3>Answer details</h3>
Grade: 9
Subject: Mathematics
Chapter: Area and Surface Area
Keywords: Area, Surface Area, Decomposing, Rearranging, rectangle
Answer:
3/5 * 1/3= 1/3, That is false but 3/5 * 1/3 = 1/5
Answer:
21 weeks
Step-by-step explanation:
In this question, we are to use proportionality to find the solution to the question.
We were made to know that the time taken to build the highway is varied directly with the length and inversely with the number of workers.
Let us make a mathematical representation for this.
Let the time be t, number of workers be w and length be l
t is directly proportional to l and inversely proportional to w
Mathematically;
t = kl/w
Where k is the constant of proportionality.
Let’s find the value of k
150 workers built 12 miles of highway in 14 weeks ; plug these in the equation to get k
14 = k * 12/150
k = 150 * 14/12 = 175
Now we want to get t given w and l
from ;
t = kl/w
We can get t; where l = 15 and w = 125
t = 175 * 15/125
t = 21 weeks