For rectangles, we know that there are two of each measure (length and height). If the length is four times the width, then this means l = 4w. Because there are two of each, it becomes 2 * (4w), which represents the two length measures. Now we also have two width measures, which is 2w. The phrase 'at most' hints at to perimeter being greater than or equal to something.
The answer is
Answer:
<em>b = 12 cm</em>
Step-by-step explanation:
<u>The Pythagora's Theorem</u>
The area of a square of side length x is
We have three squares, two of which have side lengths of a=5 cm and b= 13 cm.
The combined area of the smaller squares is the same as the area of the largest square. We cannot say at first sight which square is the largest, we'll assume the square of side length of 13 cm is the largest one. Thus:
Where b is the unknown side length.
The above expression corresponds to the Pythagora's Theorem formula. Solving for b:
b = 12 cm