Question

Kevin has a rectangular

Answer 1

Answer:

20 feet long

Step-by-step explanation:

To solve this you need to use the Pythagorean theorum, $a^2+b^2=c^2$, where c is the length of rope needed and A and B are the side lengths. Think of it like a right triangle.

So, the equation is

$12^2+16^2=c^2$

Which is then

$144+256=c^2$

$c^2=400$

And the possible values of c are 20 and -20.

From here we know the answer cannot be -20 because you cannot have a negatively long length of rope, so the answer must be 20 feet.

Answer 2

Answer:

20 feet

Step-by-step explanation:

Use Pythagoras's theorem.

$A^{2}+B^{2} =C^{2} \\12^{2} +16^{2}= C^{2} \\400 = C^{2} \\\sqrt{400}= \sqrt{C^{2}$

20 = C