Hi there!
We know that:
Area of a rectangle = l × w
The areas are the same, so:
3x · 4 = 6(3x - 2.5)
Simplify:
12x = 18x - 15
Solve for x:
15 = 6x
x = 2.5
Plug in this value of x to find the perimeter of rectangle B:
P = 2l + 2w
l = 6
w = 3(2.5) - 2.5 = 5
P = 2(6) + 2(5) = 22 cm
Answer:
Step-by-step explanation:
We know that the first digit of 3.7, 3, will just be a 3.
However, if we have , we have to know what gets this.
If we have a number over 9, it will be that number repeating (excluding 9 itself).
So if we have .77 repeating, it would have to be , adding 3 to this gets us
.
Hope this helped!