Total portions are
5+4+3
12
One portion,
4860 / 12
405
So
5 : 4 : 3
5*405 : 4*405 : 3:405
2025 : 1620 : 1215
The area of the shaded rectangle is 18 square units.
<h3>
How to get the area of the shaded region?</h3>
The shaded region is the framed rectangle, and the white part is the frame.
We know that the frame is 2 units wide, and the measure of the rectangle and the frame are:
- width = 7 units
- length = 10 units
Now, if we remove the frame, we will remove 2*2 units = 4 units for each measure (because for each measure we have the frame in both sides).
So the measures for the shaded rectangle are:
- width = 7 units - 4 units = 3 units
- length = 10 units - 4 units = 6 units.
And the area of a rectangle is given by the product between the width and length, then we have:
A = (3 units)*(6 units) = 18 square units.
If you want to learn more about rectangles, you can read:
brainly.com/question/17297081
The area of a triangle is area=1/2•base•height or a= b•h / 2
You use the cricle fourmla (πr sqaure). and you will get 7.065
24 would be the smallest common denominator.
Hope this helps! Good Luck!