Answer:
The answer is about 1.732, the exact form being
.
Step-by-step explanation:
The square root of 12 is 3.4641. You then divide this by 2 and you get approximately 1.732. This in the exact form is
.
You can use the Pythagorean theorem to answer this. The diagonal is the hypotenuse of the right triangle that is formed. So, your equation will look like (h is height):

We have to solve for h:


You can plug it into a calculator, and you get approximately 19.105. The answer closest to that is
B. So, that's your answer! Hope it helps. If anything doesn't make sense, hmu!
Answer:
<em>The length is 26 cm, and the width is 6 cm.</em>
Step-by-step explanation:
The width is unknown. Let w = width.
The length is 8 cm more than 3 times the width.
length = 3w + 8
The perimeter is 64 cm.
P = length + length + width + width
3w + 8 + 3w + 8 + w + w = 64
8w + 16 = 64
8w = 48
w = 6
The width is 6 cm.
length = 3w + 8 = 3(6) + 8 = 18 + 8 = 26
The length is 26 cm