Hi there!
First, we need to find the area of the rectangles.
10 × 5 = 50
9 × 3 = 27
Now, we find the percent of increase.
27 ÷ 50 = 0.54
Convert into a percentage:
0.54 = 54%
And subtract from 100%.
100% - 54% = 46%
The answer is 46%.
Hope this helps!
Because 1 is equal to 3/3, 3 can be displayed as 9/3. The extra 1/3 would make it 10/3.
I think it would be six tenths because another way to write 6 tenths is 60 hundreths. So, you'd compare 60 hundreths and 45 hundreths, and since 60 is bigger than 40, it would be six tenths....I'm not really good at explaining things, but, I hope this helped.

Let's solve ~
Assume width of rectangle be " x ", length = 3×width + 8 = 3x + 8 ~
Now, Perimeter of rectangle is :








Hence, width = x = 5 cm




And, length = 26 cm